What expresses the increase in the relative benefits
> the relative increase in frequency of successes in the treatment group compared to the control group
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Showing posts from January, 2019
Which of the following options is a potential limitation for the patients from practical application of patients from clinical recommendations
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Which of the following questions are answered by the external validity of the study
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How called the study in which the systematic errors minimize and random errors into account
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Which stage of evidence-based medicine is the analysis of the articles and their critical evaluation
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During the conduction of clinical audit in the health organization has estimated the totality of characteristics of health care to meet the needs of citizens in the effective prevention and treatment of diseases, improving the quality of life and increase its duration. Which criterion was evaluated in this case
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During the conduction of clinical audit were used to assess the amounts of medical care, indirectly reflects the quality of its main components. How called these amounts
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During the conduction of clinical audit had been calculated the probability of unexpected situations that can confront Health Organization, which may affect the outcome of treatment of a patient with an analysis of technology diagnostic and treatment process. Which assessment has been made in this case
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Ataxia telangiectasia (Louis-Bar syndrome) - a disease with autosomal recessive mode of inheritance, occurring at a frequency of 1: 40,000 births. Disease gene mapped in 1988 on the long arm of chromosome 11 locus 11q22-11q23. LK revealed the boy, 7 years, observed at the Children's Neurological city polyclinic with complaints of epileptic seizures, delayed psycho-speech development. An example of what design of study is this disease
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For the maintenance of sinus rhythm after cardioversion in patients with atrial fibrillation was used quinidine. The results of 6 randomized clinical trials showed that taking quinidine contributed to maintaining sinus rhythm at 1 year in 50% of patients compared with 25% of patients who did not receive it. However, the mortality rate in patients receiving quinidine increased from 0.8 to 2.9%. Which design of study conducted
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Researchers from Taiwan conducted a retrospective study in which examined the practice of prescribing antibiotics for acute otitis media (AOM), an attempt to identify possible factors that may influence the outcome in AOM. In the study it was included medical records of 400 children with AOM. The dosage regimen of amoxicillin regarded as appropriate clinical guidelines in cases where the drug was used at a dose of 80-90 mg / kg / day. The results of this study demonstrated that the use of high drug form according to the current clinical guidelines outperforms conventional dosing regimens for patients weighing up to 20 kg and bilateral otitis
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On the basis of the University of California (San Diego, USA) carried out a study which compared the efficacy and safety of daptomycin therapy vs standard treatment for children with a complicated infections of the skin and soft tissues. Patients in the group of daptomycin (n = 263) was obtained in preparation 1 time per day in / at a dose adjusted according to the age of the child, for 3 days. Patients in the standard treatment group (n = 133) received either clindamycin (50.4%) or vancomycin (42.1%). The clinical success of therapy was registered at 88.3% of patients in the daptomycin group and 86.3% in the standard treatment group
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A large study of 7718 men aged 40 to 59 years, randomly selected in 24 British cities, in order to determine risk factors for coronary heart disease. Of 7718 men who provided information about smoking, 5899 (76.4%) smoked a certain period of life (including those who smoke now and who smoked in the past). For 10 years, 650 of the 7718 men (8.4%), myocardial infarction. What design of the study was conducted
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For biomedical research in the range of what probability percent confidence interval is considered to be reliable
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In the Australian study, during 20 years are estimated cardiovascular mortality and incidence of coronary heart disease (CHD) in individuals with altered thyroid status. Attended by 2,108 participants (average age 50 years, 17 to 89 years) included in the survey the Busselton Health Study, which in 1981 were collected blood samples frozen at -70ºS and in 2001 studied at the content of TSH T4, antibodies to thyroglobulin and thyroid peroxidase. The study shows the role of latent hypothyroidism as a risk factor for CHD. What design of the study conducted
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The purpose of the study - the study of the prevalence of multiple sclerosis (MS) in the Altai Territory. During the period from 1996 to 2009, it collected information on patients with definite MS living in the Altai Territory. On 01.01.2010, the prevalence of MS in the Altai Territory was 39.9 per 100 thousand. Population (standardized prevalence in the European population - 36.9 per 100 thousand.). Thus, the Altai region belongs to the zone of average risk of developing MS. What design of the study was
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In Norway, a study was conducted, the purpose of which was to determine the relationship between coffee consumption (measured by questionnaire), and the level of cholesterol, which was established during the second screening in Tromsø. After screening 33 men with hypercholesterolemia have been incorporated in the 10-week study. They were randomly divided into groups, one of which continued normal coffee consumption, the other completely stopped drinking coffee, the third stop drinking coffee for 5 weeks, and then again began to drink coffee, consuming or coffee made on the national method, or filtered. The results confirmed the relationship between coffee consumption and increased cholesterol levels. What design of the study was conducted
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A recently published study on the use of somatostatin when the retrograde cholangiopancreatography (ERCP) demonstrated its effectiveness in reducing the likelihood of developing pancreatitis. In this work, somatostatin used either as a continuous 12-hour infusion, starting 30 minutes prior to the ERCP, or as a bolus intravenous injection at the time of cannulation of large duodenal papilla. Percentage of pancreatitis in both groups was 1.7%, whereas in the placebo group it reached 9.8%. What design of the study was conducted
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Does leads the application of angiotensin-converting-enzyme (ACE) inhibitors in patients with hypertension to reduce the incidence of organ damage in comparison with the use of calcium channel blockers What component of this clinical problem it is the intervention (Intervention) on the basis of PICO
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Does leads the application of angiotensin-converting-enzyme (ACE) inhibitors in patients with hypertension to reduce the incidence of organ damage in comparison with the use of calcium channel blockers What component of this clinical problem is population / patient (Population / Ratient) on the basis of РІСО
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What is the confidence interval and the level of significance, the notion
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Which of the following choices is the criterion of observational studies
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To what aspects must comply with the methods of research in a clinical trial
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Which of the following options refers to the methods statistical treatment of results
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Which of the following options applies to the type of design as a set of classification criteria
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Which of the following options applies to the sources of scientific evidence
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What are the advantages of the medical institution, which was accredited
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The aim of this study was to evaluate the effect of long-term exposure to cadmium in the death rate from cancer. The observed cohort totaled American Indians from Arizona, Oklahoma, North and South Dakota, and the time of observation cohort was 20 years old. The study found that prolonged exposure cadmium increases the risk of mortality from cancer in a 1.30-fold (95% Ci 1,09-1,55), and the death rate from lung cancer - 2.27 times (95% Ci 1 , 58-3,27). What is the design of the study conducted
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These timing of Oxford students and doctors spent on work with the medical literature on the problematic obese patients, as follows: the results of self-assessment (the number of minutes in the last week) participants in the study, the following data: the students spend 60-120 minutes (up to 75% During this period it did not read), heads of departments - 10-90 minutes (up to 40% have not read), residents of 10-45 minutes (up to 15% have not read), consultant of the issue after 1975 - 15-60 (up to 30 % do not read) to release 1975 - 10-45 minutes (up to 40% have not read). What is the design of the study conducted
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Which of the following options is one of the basic principles of clinical epidemiology
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Which of the following options is an essential component of applied problem
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"Evaluation of the prevalence of disease." What study design is presented, depending on the purpose of the study-
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“High-uality systematic reviews of case-controlled or cohort studies. High quality controlled cases or cohort studies with a very low risk of errors or deviations and the high probability that the relationship is causal.” What level of credibility of the evidence presented based on the type of evidence
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"Non-analytic studies, such as clinical studies, case reports." What level of credibility of the evidence presented based on the type of evidence
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"The opinion of experts." What level of credibility of the evidence presented based on the type of evidence
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"High-quality meta-analyzes systematic reviews of RCTs, or RCTs with a very high risk of error." What level of credibility of the evidence presented based on the type of evidence
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"Meta-analyzes, systematic reviews, or RCTs with a high risk of error." What level of credibility of the evidence presented based on the type of evidence
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"Well-conducted meta-analyzes, systematic reviews, or RCTs with a low risk of error. At least one RCT ". What level of credibility of the evidence presented based on the type of evidence
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What the experts taking part in the second stage of accreditation of medical institutions
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What documents about accreditation issued to the subject of health, has passed accreditation
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What are the characteristics of decision-making not based on the principles of evidence-based medicine
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is the name of the research conducted on the submissions received in the past or on the information obtained at the time of the study of the past, ie, outcomes have come before it began
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Which of the following options is the aim of conducting post-marketing studies
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Is it necessary to carry out normalization of metabolic functions, including glycemic profile for the prevention of coronary heart disease in patients with diabetes Which fragment of the clinical question corresponds to the component "I" according to the principle PICO
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Which of the following options are the sources of Evidence information
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How called proportion of people with a particular disease at a given time
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How called factor that distorts the results of the study
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Which phases of trials must necessarily go to the original drug before registration
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"Does leads the high body mass index to the development of osteoarthritis of the knee in patients who are obese " What design of study can be found on the clinical questions
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How divided the clinical studies by inform participants about the course of the research process
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How divided the clinical studies according to the degree of randomness of the experiment
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How divided the clinical studies by the length of time of observation
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How divided the clinical studies by the method of obtaining information
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What does meant by a statistical measure allowing assessing the extent to which may be the true value of parameter in the population; is an range of the true values
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What study is needed to spend to find out how effective the extract of the herb St. John's wort, compared with small doses of tricyclic antidepressants in mild and moderate depression
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A large study of 7718 men aged 40 to 59 years, randomly selected in 24 British cities, in order to determine risk factors for coronary heart disease. Of 7718 men who provided information about smoking, 5899 (76.4%) smoked a certain period of life (including those who smoke now and who smoked in the past). For 10 years, 650 of the 7718 men (8.4%), myocardial infarction. What design of the study was conducted
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For biomedical research in the range of what probability percent confidence interval is considered to be reliable
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Does leads the application of angiotensin-converting-enzyme (ACE) inhibitors in patients with hypertension to reduce the incidence of organ damage in comparison with the use of calcium channel blockers What component of the clinical question it is the comparison (Comparison) on the basis of PICO
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Which a written document confirming a person's desire to participate in a clinical trial after it has been informed about all the details of the study
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What is the name of the large group of people living in a particular geographical area or have some common feature
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How called the beneficial effect in response to interference regardless of whether it was present or placebo (fluff) associated with a psychological effect on the patient
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There are various ways of randomization. Which principle of randomization is the best
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How the main property must have a sample of the population
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Screening study of thyroid-stimulating hormone is recommended to conduct for all adults over the age of 35 years at intervals of 5 years. What research can answer the clinical questions
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What section of the medical article answers the following questions: "Do you agree with the conclusions made by the authors based on the data ", "Are these findings too generalizing ", "Are there any other factors that need to be taken into account which could affect the results of the study
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Conduct does appointment clopidogrel in patients with myocardial infarction and underwent coronary stenting to reduce the risk of another heart attack, compared with the use of acetylsalicylic acid What component clinical of the issue is a comparison (Comparison) on the basis of PICO
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During the study compared two groups of students in the school. One group was engaged in hygienically properly lit and equipped room, another group - in the classroom, where these rights are not respected. Both groups were taught the same subjects. In the first group, the children were more attentive and less tired during the school day than the children of the second group. What design of the study was conducted
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With the aim to assess the state of immunity infant feeding and artificial feeding mothers, a study was conducted 6 months duration. According to the study children, non-feeding mother's milk was in 3 times more susceptible to SARS and allergic diseases than children who were breast-fed. What design of the study was conducted
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Scientists have conducted clinical research whose purpose was - to detect any NSAID most commonly causes side effects. The study involved 8677 patients. Patients were randomly divided into 3 groups: in 2900 received acetylsalicylic acid, 2886 - ibuprofen and 2888 - of paracetamol. What kind of study design in questions
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You need to find articles on the methods of treating breast cancer in PubMed. What subheading you choose
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Which of the following examples of randomization is the correct
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What design of the study is the "gold standard" of study in medicine
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Patients with severe chronic itching participated in trials of drugs, relieves itching. Within each of the three weeks in a random sequence of 48 patients received either cyproheptadine or trimeprazine or placebo. The patients did not know which group they belong to. On which of the following research question
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What database when searching for the necessary information regarding the diagnosis, treatment and prevention using Boolean logic
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It conducts research in which there is a certain population in a given time interval. What kind of research do you mean
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Which e-mail address corresponds to the database, gather, evaluate and summarize current data on clinical efficacy
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What research is the most convincing based on the "evidence pyramid" in relation to the effectiveness of treatment and prevention
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You need to find a description methods of the treatment of hypertension with the use enalapril, what a logical operator for PubMed you will use
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You need to find a description methods of the treatment of pneumonia with the use of amoxicillin in pregnant women, what a logical operator for PubMed you will use
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You need to find a description methods of the treatment of asthma or chronic obstructive pulmonary disease with the use of salbutamol, a logical operator for PubMed you will use
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You need to find a description of the treatment of asthma with the use of salbutamol and fluticasone, a logical operator for PubMed you will use
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You need to find a description of the treatment of pneumonia with azithromycin is not the elderly, a logical operator for PubMed you will use
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Which of the following options applies to specialized sites on evidence-based medicine
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Which of the following options applies to the main categories of clinical questions
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When conducting what method the likelihood of for compare procedures more than for comparison drug
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In what kinds of study, applies the procedures without comparison with other treatment options
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To which of these options to refer experience with the drug, without comparison with other treatment options
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In what studies, a high probability of detecting differences in treatment
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To which of these options to refer a comparison of the drug or procedure with other drugs or procedure
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An example of what kind of studies is uncontrolled clinical studies
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To which of these options to refer the controlled clinical trials
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What are the most important requirements for medical research
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To which trials (studies) are required as the correct use of statistical methods for processing
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In what studies, have to be reported about case series
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What may applies to the results of the intervention in conducting the pilot study
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How many usually groups of patients involved in experimental studies
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What is the name of study in which evaluates the results of the intervention and observed the subject of research
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What is the name of study in which one or more patient groups are described and there are certain characteristics
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What information should be included specialized sites
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Which of the following options applies to the merits of Medline
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For what use limits when searching for information in electronic databases
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Which of the following options is one of the electronic search
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Which of the following options is the definition of Medline
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Which of the following options applies to electronic search
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Who is the creator of The Cochrane Library -The Cochrane Collaboration
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What is meant by the fourth step in evidence-based medicine
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What is meant by the third step in evidence-based medicine
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What is meant by the second step in evidence-based medicine
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What is meant by the first step in evidence-based medicine
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Which of the following options corresponds to the definition of the term "evidence-based medicine
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In what year was proposed the term "evidence-based medicine" (EBM) and “scientific and evidence-based medicine” (SEBM)
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Pubmed allows the use of Boolean operators between search terms. If two or more terms to be found in the same document, it is necessary to choose
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Pubmed allows the use of Boolean operators between search terms. B if at least one of the terms must be found in the document, it is necessary to choose
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Pubmed allows the use of Boolean operators between search terms. B if only one term should be found in the document, and the second must necessarily be absent, it is necessary to choose
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This function is used to find all variants of the same word with the same base (root). To do this, print the foundation word and an asterisk (*) next to it, for example, bacter *. PubMed find all words with the same root but with different endings: bacteriology (bacteriology), bacteria (bacteria), bacterias (bacteria), bacterial (bacteriological), etc. What do you call this function
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When evaluating a parameter indicator of clinical-pharmacological expertise, assessment "incomplete compliance of medical technologies appropriate indicator" correspond to what score
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You can improve the quality and results of search by using the function "Limits" at any stage of the search. Using "Limits" is always desirable if you got too many articles in response to your request. Your task is narrow the search in PubMed by type of article, which of the following options you select
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You can improve the quality and results of search by using the function "Limits" at any stage of the search. Using "Limits" is always desirable if you got too many articles in response to your request. Your task is narrow the search in PubMed by document type, which of the following options you select
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What is one of the objectives of the IV phase of the clinical trial
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What is one of the objectives of the II phase of the clinical trial
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What is one of the objectives of the I phase of the clinical trial
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In what phase of clinical study involved healthy people – volunteers
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Are you interested in articles on the treatment of pneumonia in children. To find these articles in Pubmed, the search box you enter the word pneumonia and get search results - a few thousand articles. Then, you narrow the search to pneumonia in children, and introduce children. Now limit the search for treatment and enter treatment. What excuses do you use to bind the words to each other
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Which of the following options corresponds to the adequate hierarchy of evidence
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What is the purpose of application of clinical practice guidelines
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Is it necessary performing radiography in patients suspected of having sinusitis Which of the following answers corresponds to the component of intervention under the principle of PICO
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What are the principles for the development of clinical guidelines
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Which of the following options apply to the true criteria of treatment effectiveness
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What is meant is the true criteria of treatment effectiveness
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How many groups of patients should at least be in randomized controlled trials
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The researcher must decide how comparable group of patients included in the study, with patients, to whom he is going to use (demographic characteristics, severity and duration of illness, comorbidities, the proportion of men and women, there are no contraindications to diagnostic and / or therapeutic interventions etc.). What are the names given in the example, the criteria
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What is the type of study design is the most short-term
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Which of the following levels of evidence corresponds to the following definition: "the relative strength of the evidence: there is enough evidence for recommending the proposal
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Which of the following levels of evidence corresponds to the following definition: "convincing evidence: there is strong evidence in favor of this method
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Which of the following terms correspond to the following definition: "an instrument of implementation of clinical guidelines, which is a regulatory document that governs the provision of the necessary volume of medical care for specific clinical condition or disease, which is the main instrument in monitoring activities and successor documents regulating the process of providing medical services
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Which of the following characteristics characterized for clinical practice guidelines based on the principles of evidence-based medicine
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What kind of study design informs the existence of "experimental" (with the test intervention) and "control" (receiving placebo or "traditional", "standard" treatment)
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Which of the following options is the frequency of the disease
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Which of the following options applies generalizability
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Which of the following options applies quantitative approach
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Which of the following options apply to the principles of clinical epidemiology
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Which of the following embodiments refers to components clinical question
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Which of the following options related to clinical outcomes in clinical epidemiology
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Which of the following options related to one of the components of an application problem
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What is meant by the fourth step in evidence-based medicine
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What is meant by the third step in evidence-based medicine
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What is meant by the second step in evidencebased medicine
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What is meant by the first step in evidence-based medicine
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Which of the following options apply to the concept of "evidence-based medicine"
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Which of the following choices is the main aspect of the Evidence-Based Medicine
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"Assessment of morbidity." What study design is presented, depending on the purpose of the study
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"Evaluation of the prevalence of disease." What study design is presented, depending on the purpose of the study
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What is the assessment of the cumulative effect is carried out in a systematic review
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Science allows the prediction for each patient based on a study of the clinical course of the disease in similar cases, using rigorous scientific methods of studying groups of patients to ensure the accuracy of the forecast. On which of the following terms mean
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The approach to the practice of medicine, in which decisions on the use of preventive, diagnostic and therapeutic measures are taken, based on the evidence of their effectiveness and safety, and offering a search, comparison, generalization and widespread evidence obtained for the benefit of the patient. On which of the following terms mean
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How is name of the drug which is not registered for the treatment of a particular disease in humans
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What is the source of evidence-based information in the field of evidence-based medicine
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What determines the “reliability of the data” based on the terminology of evidence-based medicine
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What determines the “generalizability of the results”, based on the terminology of evidence-based medicine
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“At least one well-organized, controlled trial without randomization or quasi-experimental research”. To what level of clinical guidelines is the kind of research
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What research is the most convincing based on the "evidence pyramid" in relation to the effectiveness of treatment and prevention
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By what characteristics should be similar to the studies included in the meta-analysis
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You need to find a description methods of the treatment of hypertension with the use enalapril, what a logical operator for PubMed you will use
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What are the benefits for the physician gives of clinical guidelines based on evidence
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What are the advantages have of management on the basis of evidence
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After what period of time it is recommended to conduct audit of clinical guidelines after introduction to the practice
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You need to find a description methods of the treatment of pneumonia with the use of amoxicillin in pregnant women, what a logical operator for PubMed you will use
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What principle underlies the development of clinical practice guidelines
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You need to find a description methods of the treatment of asthma or chronic obstructive pulmonary disease with the use of salbutamol, a logical operator for PubMed you will use
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What are the characteristics of decision-making not based on the principles of evidence-based medicine
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Determine the volume of the circulating blood for people are having weight 40 kg. If you know the regression coefficient and the intercept of the simple linear regression a= 1; b= 0,052
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Determine the score with the self-tuition time 7 hours/week. If you know the regression coefficient and the intercept of the simple linear regression a= 30; b= 5
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Determine the content of hemoglobin in 35 kg body. If you know the regression coefficient and the intercept of the simple linear regression a= 50; b=2
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Determine the pectoral fin length for perches with head length of 48 mm. If you know the regression coefficient and the intercept of the simple linear regression a= (-5); b=0,5
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Determine the latency time for the 8 microVolts potentials amplitude. If you know the regression coefficient and the intercept of the simple linear regression a= 10; b=3
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Determine the volume of the circulating blood for people who are 160 cm high. If you know the regression coefficient and the intercept of the simple linear regression a= (-4); b=1
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Determine body surface area for people that weigh 60 kilograms. If you know the regression coefficient and the intercept of the simple linear regression a=0,5; b=0,5
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Determine body surface area for people that weigh 30 kilograms. If you know the regression coefficient and the intercept of the simple linear regression a=0,5; b=0,5
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Determine the prolactin concentration on the 8th month of pregnancy. If you know the regression coefficient and the intercept of the simple linear regression a=6; b=20
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Determine the hormone concentration in urine at 70 years of age. If you know the regression coefficient and the intercept of the simple linear regression a=1; b=0,5
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Determine the total cholesterol (mm/l) for people at 20 years of age. If you know the regression coefficient and the intercept of the simple linear regression a= 2; b= 0,5
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Among the measure of dispersion which is the most frequently used:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 15, 25, 20, 15 and 30. The mode is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 40, 25, 20, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 18, 25, 20, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 15, 25, 20, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 12, 25, 10, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 12, 25, 15, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 9, 25, 9, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 9, 25, 9, and 30. The median is calculated to be:
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In an epidemiological study, the incubation periods obtained were 2, 5, 8, 10, 25, 10, and 30. The median is calculated to be:
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Calculate the mode of 14,71; 14,71; 14,72; 14,71; 14,70; 14,74:
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Calculate the mode of 1471, 1471, 1472, 1471, 1470, 1474:
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Hemoglobin level samples from three community are best campared by:
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Weight samples from two community are best campared by:
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Nine babies are born in a hospital on same day. All weight 3200 g each. Calculate the variance.
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Nine babies are born in a hospital on same day. All weight 3200 g each. Calculate the variance.
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Eighteen babies are born in a hospital on same day. All weight 2800 g each. Calculate the standard deviation.
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Ten babies are born in a hospital on same day. All weight 3,2 kg each. Calculate the variance.
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In a population study for malaria over the past few years, the number of case reported were 20, 5000, 100, 80, 60, 70, 40, 60, 80. The average is best represented by:
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A number of cases of malaria are collected over 10 years with extreme variation in data. The best measure to calculate average is:
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Relationship between two variables can be presented by:
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In 7 babies born in a hospital is 3 above 2.4 kg and 3 below 2.4 kg. The value 2.4 is:
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The two important values necessary for describing the frequency distribution of a series of observation are:
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For determination of which statistical parameter requires quantities to be arranged in an ascending or descending order?
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The average birth weights in a hospital are to be demonstrated by statistical representation. This is best done by:
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Best graph for demonstration of relationship between ages and weight is:
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All of the following diagrams can be draw from quantitative data,except:
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A hypothesis which a researcher tries to disprove is:
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In biomedical research survival analysis is typically used to evaluate
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Correlation coefficient provides all of the following information, except:
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The listed observations: 50, 200,300,400,600, suggest the distribution:
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The listed observations: 10, 20 ,30 ,40, 1000, suggest the distribution:
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The listed observations: 5, 20,30,40,60, suggest the distribution:
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A type of graphical presentation data used to explain correlation between dependent and independent variable is:
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When explaining the direction of the linear association between two numerical paired variables, a positive correlation is stated when:
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The degree of flatness of a graph of a frequency distribution is termed as:
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The degree of peakedness of a graph of a frequency distribution is termed as:
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How many degrees of freedom would a contingency table with 3 rows and 3 columns have
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How many degrees of freedom would a contingency table with 3 rows and 2 columns have
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A researcher has collected the following sample data: 5 12 6 5 8 7 6 5 12 4. The median is:
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The standard deviation of a sample of 49 observations equals 21. The standard error of mean equals:
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The standard deviation of a sample of 25 observations equals 5. The standard error of mean equals:
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The standard deviation of a sample of 100 observations equals 5. The standard error of mean equals:
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The standard deviation of a sample of 100 observations equals 64. The standard error of mean equals:
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The variance of a sample of 81 observations equals 64. The standard deviation of the sample equals
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The standard deviation of a sample of 100 observations equals 64. The variance of the sample equals
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The sum of squared deviations of the individual data elements from their mean is
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If a data set has an even number of observations, the median
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The sum of the percent frequencies for all classes will always equal
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Which of the following statements regarding the coefficient of correlation is true
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All of the following are contained in a frequency table except _____.
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Which type of variable is coded using a 0 for one response and a 1 for the other
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A _____ is the total collection of elements about which the researcher wishes to make inferences.
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Which term below refers to the individual participant or object on which a measurement is taken
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If the correlation coefficient r = 0.5 then the coefficient of determination is
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Which of the following values could not represent a correlation coefficient?
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If an ANOVA test is conducted and the null hypothesis is rejected, what does this indicate?
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If the coefficient of multiple determination is 0.81, what percent of variation is not explained?
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Some people have white coat hypertension. That is, they are anxious when visiting a medical office and, as a result, their blood pressure increases when a person with a white lab coat and a stethoscope walks into the room to take a blood pressure. To see whether his patients experience white coat hypertension, a family practitioner takes two blood pressure measurements – one when first walking into the room and a second, unexpected, one after about 15 minutes have passed. What statistical test is the most appropriate to answer the research question
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What research question is the best fit for frequency table analysis?
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What research question is the best fit for Spearman correlation
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What research question is the best fit for one-way ANOVA
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What research question is the best fit for Pearson correlation
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What research question is the best fit for Wilcoxon matched pairs test
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What research question is the best fit for simple linear regression
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The researcher wants to know how three different drugs influence the neurologic back pain (measured on scale 0-10) in his 15 patients. What statistical method of analysis should be used
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The researcher wants to know whether smoking is associated with lung cancer. What statistical method of analysis should be used
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The researcher wants to know whether his 50 patients have normal systolic blood pressure. What statistical method of analysis should be used
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The researcher wants to know whether there is a relationship between social status and depression score. What statistical method of analysis should be used
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The researcher wants to know what influences systolic blood pressure more: age, weight, height, or depression score. What statistical method of analysis should be used
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The researcher wants to know whether normally distributed systolic blood pressure differs in patients with cardiac and pulmonary diseases. There are only 50 pulmonary patients and 80 cardiac patients in the hospital. What statistical method of analysis should be used
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The researcher wants to know whether systolic blood pressure differs in patients with cardiac and pulmonary diseases. Unfortunately there is only 5 pulmonary patients and 8 cardiac patients in the hospital. What statistical method of analysis should be used
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The researcher wants to know whether the blood pressure changes after physical work. The sample consists of 8 people. What statistical method of analysis should be used
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The researcher wants to know whether the respiration rate changes after physical work. The sample consists of 100 people. What statistical method of analysis should be used
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The researcher wants to know whether the blood pressure changes after physical work. The sample consists of 248 people. What statistical method of analysis should be used
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The researcher wants to know the degree of linear realtionship between two variables measured in at least interval scale. What statistical method of analysis should be used
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What research question is the most suitable for multiple regression
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What research question is the most suitable for simple linear regression
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What research question is the most suitable for survival analysis
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What research question is the most suitable for factorial ANOVA
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What research question is the most suitable for one-way ANOVA
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What research question is the most suitable for Kruskal Wallis ANOVA
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What research question is the most suitable for Mann-Whitney U test
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What research question is the most suitable for Wilcoxon matched pairs test
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What research question is the most suitable for Chi-square test
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What research question is the most suitable for two samples t-test
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What research question is the most suitable for paired t-test
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What research question is the most suitable for one sample t-test
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In measuring the centre of the data from a skewed distribution, the median would be preferred over the mean for most purposes because
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If most of the measurements in a large data set are of approximately the same magnitude except for a few measurements that are quite a bit larger, how would the mean and median of the data set compare and what shape would a histogram of the data set have
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The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample median and sample mean are respectively
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An experiment was performed upon rats to investigate the effect of ingesting Alar (a chemical sprayed on apple trees to keep fruit from dropping before ripe) upon subsequent cancer rates. The following variables were measured: gender (0=female, 1=male); weight (g); dose of Alar (nil, low, high); number of tumors. The typical weight of a rat is about 800 g and the weights were rounded to the nearest gram. The number of tumors is around 10. Which of the following is FALSE
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A study was conducted to measure the effect of smoking upon the birth weight of a baby. The following variables were measured for each women in the study: smoking status (yes,no), baby birth weight (g), APGAR score, birth date. The scales of these four variables (in order) are
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A study was conducted to investigate the effect of a coal-fire generating plant upon the water quality of a river. As part of an environmental impact study, fish were captured, tagged, and released. The following information was recorded for each fish: sex(0=female, 1=male), length(cm), maturation (0=young, 1=adult), weight(g). The scales of these four variables (in order) are
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The following variables were measured in a group of volunteers: sex, initial weight (kg), body temperature (°C), weight gain(kg). The scales of these four variables (in order) are
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In an experiment to determine if antibiotics increase the final dressed weight of cattle, the following were measured on each animal in the study: sex, initial weight, blood group, grade of meat (A, B, or C). The scales of measurement of these 4 variables (in order) are
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Fill in the missing words to the quote: “The entire group of objects or people about which information is wanted is called the _______. The __________is the part that is actually examined in order to gather information. Individual members in it are called __________.
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Fill in the missing words to the quote: “Statistical methods may be described as methods for drawing conclusions about ________ based on _______ computed from the _________.
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Appropriate statistical method to compare four means is:
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Appropriate statistical method to compare three means is
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Which of the following is required for the χ2 statistic
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The value of correlation coefficient (r) for two variables: adaptation level and year of education is 0.87. This is
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The value of correlation coefficient (r) for two variables: anxiety and number of positive emotions is -0.68. This is
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The value of correlation coefficient (r) for two variables: Latency time (ms) and Magnitude of brain potentials (mcV) is 0.28. This is:
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The value of correlation coefficient (r) for two variables: Concentration of prolactin in blood ng/ml and Pregnancy (month) is 0.65. This is
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The value of correlation coefficient (r) for two variables: Concentration of androsterone in urine mg/day and Age (years) is -0.99. This is
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Correlation between intraocular and liver sizes is 0.3. This is
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The method of finding relationship involving more than two variables is known as
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The difference between the maximum and minimum values of the variable
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The score dividing the variable that 25% of the scores fall above it and 75% fall below it
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The score dividing the variable that 75% of the scores fall above it and 25% fall below it
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The square root of average squared differences with the mean value
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The sum of the scores divided by the number of scores
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The score dividing the variable that half of the scores fall above it and half fall below it
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In t-test what tells you about the significant difference between the means
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In t-test what tells you about the significant difference between the means
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