Quiz 2

QUESTION 1

         In large samples, the sampling distribution of the risk difference is approximately ?


0.67 points  

QUESTION 2

         Plus-four confidence interval method for a difference in proportions is accurate in samples as small as 


0.67 points  

QUESTION 3

         Which of the following is not a requirement for consideration before continuing with the calculation of a sample size in an observational study observing the difference in incidence of disease X based on exposure?


0.67 points  

QUESTION 4

         Which of the following is not an example of systematic error in an observational study?


0.67 points  

QUESTION 5

         Proportions are tested for a significant _____ difference?


0.67 points  

QUESTION 6

         What is not a method for testing proportions for significance?


0.67 points  

QUESTION 7

         In calculating for tests of proportions for small samples (fewer than 5 successes expected in either group), avoid the z test and use


0.67 points  

QUESTION 8

         Before conducting Fisher’s test, data are rearranged to form a 


0.67 points  

QUESTION 9

         The best way to calculate a p value for a Fisher’s Exact is to


0.67 points  

QUESTION 10

         The RR (risk ratio or prevalence ratios) is a risk 


0.67 points  

QUESTION 11

         When p1 = p2 , RR = 1. 


0.67 points  

QUESTION 12

         An RR of 1.15 indicates 


0.67 points  

QUESTION 13

         In observational studies, systematic errors are often _____important than random sampling error?


0.67 points  

QUESTION 14

         The three types of systematic error considered do not include


0.67 points  

QUESTION 15

         Nondifferential misclassification tends to bias results 


0.67 points