QUESTION 1

Which nonparametric test would you use to answer the following research question: Which of 3 independent groups had the greatest reduction in weight after an intervention?

	a.	Kruskal-Wallis H
	b.	The Sign Test
	c.	Friedman
	d.	Wilcoxon matched-pairs test

5 points

QUESTION 2

Which parametric test would you use to compare the means of 3 groups?

	a.	ANOVA
	b.	Wilcoxon matched-pairs test
	c.	Kruskal-Wallis H
	d.	Independent t test

5 points

QUESTION 3

Which nonparametric test would you use to answer the following research question: What is the difference in before and after scores on a test of diabetes knowledge among 3 different intervention groups?

	a.	Friedman
	b.	The Sign Test
	c.	Wilcoxon matched-pairs test
	d.	Kruskal-Wallis H

5 points

QUESTION 4

To use the t test, the variable to be compared can be at which of the following level s of measurement?

	a.	Nominal
	b.	Ordinal
	c.	Dichotomous
	d.	Interval

5 points

QUESTION 5

What level of measurement does BMI become after it is categorized as Underweight, Normal, Overweight, and Obese?

	a.	Nominal
	b.	Ordinal
	c.	Ratio
	d.	Interval

5 points

QUESTION 6

What level of measurement is grade in high school?

	a.	Nominal
	b.	Ordinal
	c.	Ratio
	d.	Interval

5 points

QUESTION 7

Which is the correct null hypothesis based on this statement: People with diabetes have higher systolic blood pressure than people without diabetes?

	a.	People with diabetes have lower systolic blood pressure than people without diabetes.
	b.	People with diabetes have equal systolic blood pressure when compared to people without diabetes.
	c.	People with diabetes have a systolic blood pressure equal to or lower than people without diabetes.
	d.	None of these are a null hypothesis.

5 points

QUESTION 8

Which of the following statements is true?

	a.	There is no difference between using the nonparametric test or its parametric analog.
	b.	The parametric test often requires a smaller sample size to achieve the same Power.
	c.	The nonparametric test often requires a smaller sample size to achieve the same Power.
	d.	The nonparametric test is usually easier to calculate than the parametric one.

5 points

QUESTION 9

Which of the following nonparametric tests is analogous to (can be used in place of) the independent t test?

	a.	ANOVA
	b.	Wilcoxon matched-pairs test
	c.	Mann-Whitney U test
	d.	Chi square goodness of Fit test

5 points

QUESTION 10

Which of the following statements is true?

	a.	ANOVA is the parametric analog to Kruskal-Wallis H.
	b.	Wilcoxon matched-pairs test is the parametric analog to ANOVA.
	c.	Mann-Whitney U test is the nonparametric analog to ANOVA.
	d.	Chi square test for independence is the same as Chi Square goodness of fit.