A nonparametric method that is equivalent to the Wilcoxon rank sum test is the:
A)Wilcoxon signed rank sum test.
B)Friedman test.
C)Kruskal-Wallis test.
D)Mann-Whitney test.

Question

Quizplus · Accepted Answer

The nonparametric method that is equivalent to the Wilcoxon rank sum test is the Mann-Whitney test. The Wilcoxon signed rank sum test is used for paired samples, the Friedman test is used for three or more related samples, and the Kruskal-Wallis test is used for three or more independent samples.

A Nonparametric Method That Is Equivalent to the Wilcoxon Rank