Statistics

Descripción

Test I: 6, 15, 105, 106, 108, 109 Test II: 41, 87 Test III: 23, 61, 97, 99, 116, 137 Test IV: 5, 37 Test V: 23, 90, 122 Test VI: 105, 113
Eleanor garvey
Test por Eleanor garvey, actualizado hace más de 1 año
Eleanor garvey
Creado por Eleanor garvey hace más de 4 años
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Resumen del Recurso

Pregunta 1

Pregunta
Test 1 Question 6. A group of patients are looked at with regard to a risk factor for heart disease. They are divided into those who have the risk factor and those who do not. These groups are then followed for a number of years to see who does and who does not develop heart disease. This is an example of a:
Respuesta
  • Cohort study
  • Case–control study
  • Clinical trial
  • Cross-sectional survey
  • Crossover study

Pregunta 2

Pregunta
Test 1 Question 15. A chronic schizophrenic has been taking medication for 20 years. Every morning he goes to his pill bottle and takes the pills his doctor prescribes. This is an example of:
Respuesta
  • Primary prevention
  • Secondary prevention
  • Tertiary prevention
  • Malingering
  • Noncompliance

Pregunta 3

Pregunta
Test 1 Question 105. A type I error occurs when:
Respuesta
  • The null hypothesis is rejected when it should have been retained
  • The null hypothesis is retained when it should have been rejected
  • There is false rejection of a difference that was truly significant
  • The probability of an event occurring is 0
  • The probability of an event occurring is 1

Pregunta 4

Pregunta
Test 1 Question 106. The process by which a patient in a clinical trial has an equal likelihood of being in a control group versus an experimental group is:
Respuesta
  • Probability
  • Risk
  • Percentile rank
  • Power
  • Randomization

Pregunta 5

Pregunta
Test 1 Question 108. The probability of finding a true difference between two samples is:
Respuesta
  • Probability
  • Risk
  • Percentile rank
  • Power
  • Randomization

Pregunta 6

Pregunta
Test 1 Question 109. The number of people who have a disorder at a specified point in time is:
Respuesta
  • Probability
  • Risk
  • Point prevalence
  • Power
  • Randomization

Pregunta 7

Pregunta
Test 2 Question 41. Which one of the following is a method of making a prediction to compare the value of one variable to another?
Respuesta
  • Probability
  • Point prevalence
  • Incidence
  • Regression analysis
  • Kappa

Pregunta 8

Pregunta
Test 2 Question 87. A study in which a group comes from a well-defined population and is followed over a long period of time is a:
Respuesta
  • Case history study
  • Cohort study
  • Cross-sectional study
  • Case–control study
  • Retrospective study

Pregunta 9

Pregunta
Test 3 Question 23. The assumption that there is no significant difference between two random samples of a population is called:
Respuesta
  • Correlation coefficient
  • Control group
  • Analysis of variance (ANOVA)
  • Regression analysis
  • Null hypothesis

Pregunta 10

Pregunta
Test 3 Question 61. Which one of the following is false regarding the Pearson correlation coefficient?
Respuesta
  • It spans from −1 to +1
  • A positive value means that one variable moves the other variable in the same direction
  • It can give information about cause and effect
  • It indicates the degree of relationship
  • A negative value means that one variable moves the other variable in the opposite direction

Pregunta 11

Pregunta
Test 3 Question 97. A method of obtaining a prediction for the value of one variable in relation to another variable is called:
Respuesta
  • Correlation coefficient
  • Control group
  • ANOVA
  • Regression analysis
  • Null hypothesis

Pregunta 12

Pregunta
Test 3 Question 99. A measurement of the direction and strength of the relationship between two variables is called:
Respuesta
  • Correlation coefficient
  • Control group
  • ANOVA
  • Regression analysis
  • Null hypothesis

Pregunta 13

Pregunta
Test 3 Question 116. If you divide the incidence of a disease in those with risk factors by the incidence of the same disease in those without risk factors, the result is called the:
Respuesta
  • Relative incidence
  • Attributable risk
  • Relative risk
  • Period incidence
  • Incidence risk

Pregunta 14

Pregunta
Test 3 Question 137. A group that does not receive treatment and is the standard for comparison is called the:
Respuesta
  • Correlation coefficient
  • Control group
  • ANOVA
  • Regression analysis
  • Null hypothesis

Pregunta 15

Pregunta
Test 4 Question 5. A doctor in a certain hospital makes a diagnosis for a particular patient. That diagnosis is considered reliable if:
Respuesta
  • It is accurate
  • Many different doctors in different locations would agree upon the same diagnosis
  • The disorder has features characteristic enough to distinguish it from other disorders
  • The disorder allows doctors to predict the clinical course and treatment response
  • The diagnosis is based on an understanding of the underlying pathophysiology and has biological markers

Pregunta 16

Pregunta
Test 4 Question 37. A set of statistical procedures designed to compare two or more groups of observations and determine whether the differences are due to chance or experimental difference is called:
Respuesta
  • Correlation coefficient
  • Control group
  • Analysis of variance
  • Regression analysis
  • Null hypothesis

Pregunta 17

Pregunta
Test 5 Question 23. You are studying two variables, a binary predictor variable and a continuous outcome variable. You want to know if the relationship between those two variables is due to chance alone. Which of the following tests would you use?
Respuesta
  • Analysis of variance (ANOVA)
  • χ2 test
  • T test
  • Negative predictive power
  • Predictive validity

Pregunta 18

Pregunta
Test 5 Question 90. A clinical test that detects 96% of patients with a certain disease, but also produces many false positives in patients without the disease, is deemed to have:
Respuesta
  • High sensitivity and high specificity
  • Low sensitivity and high specificity
  • Low sensitivity and low specificity
  • High sensitivity and low specificity
  • Low overall clinical utility

Pregunta 19

Pregunta
Test 5 Question 122. A general consensus among experienced clinicians and researchers is known as:
Respuesta
  • Face validity
  • Descriptive validity
  • Predictive validity
  • Construct validity
  • Positive predictive power

Pregunta 20

Pregunta
Test 6 Question 105. Which of the following disorders is not more common in males?
Respuesta
  • Autism
  • Obsessive–compulsive disorder
  • ADHD
  • Exhibitionism
  • Pathological gambling

Pregunta 21

Pregunta
Test 6 Question 113. Which of the following statistical measures would be used to quantify the degree of agreement between two raters in a study?
Respuesta
  • Point prevalence
  • Period prevalence
  • Lifetime prevalence
  • Kappa
  • Correlation coefficient
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