The Mann-Whitney test is to independent samples t test as Wilcoxon's matched-pairs signed-ranks test is to
A) Kruskal-Wallis ANOVA.
B) one-way repeated-measures ANOVA.
C) related sample means t-test.
D) Friedman's rank test for k correlated samples.

Question

Quizplus · Accepted Answer

The Mann-Whitney test is used for comparing two independent samples, while Wilcoxon's matched-pairs signed-ranks test is used for comparing two related samples. Similarly, the independent samples t-test is used for comparing two independent samples, and the related sample means t-test (also known as paired samples t-test) is used for comparing two related samples. Therefore, the best choice for completing this analogy is C. Kruskal-Wallis ANOVA and Friedman's rank test for k correlated samples are both used for comparing three or more samples, so they are not relevant to this analogy. One-way repeated-measures ANOVA is also used for comparing more than two related samples, but it is not a non-parametric test like the Mann-Whitney test and Wilcoxon's signed-ranks test.

The Mann-Whitney Test Is to Independent Samples T Test as Wilcoxon's