PH 521 - Biostatistics » Summer 2021 » Week 6 Quiz

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Question #1
An appropriate condition to run the parametric test is that the outcome or dependent variable must be:
A.   Bivariate
B.   Normally distributed
C.   Ordinal
D.   All of the above
Question #2
What are “rankings” in non-parametric tests?
A.   The extent to which successive participants’ scores on the dependent variables are equally spaced
B.   Participants’ standing on the dependent variable relative to all other sample participants
C.   Participants’ standing on the independent variable relative to all other samples participants
D.   The extent to which the outcome variable is normally distributed
Question #3
Nonparametric tests are appropriate when the sample size is small and the distribution of the outcome cannot be assumed to be normally distributed.
A.   TRUE
B.   FALSE
Question #4
I am running a chi-square test to determine whether religious participants and non-religious participants differ from each other on rates of hypertension (categorized as high blood pressure, normal blood pressure, and low blood pressure). I am creating a table that contains the frequencies and percentages of all the different groups of people, based on their status on the predictor variable and outcome variable. How many different groups of people are there?
A.   3
B.   5
C.   6
D.   2
Question #5
Which nonparametric test is used to compare a continuous outcome in two independent samples?
A.   Wilcoxon signed rank test
B.   Kruskal–Wallis test
C.   Sign test
D.   Mann–Whitney U test

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