Which nonparametric test for ordinal data uses the same distribution as chi-square if the sample size for each group is a minimum of 5?
A) Kruskal-Wallis test
B) Spearman test
C) Mann-Whitney test
D) Wilcoxon matched-pairs signed-ranks test

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is a nonparametric test used to compare three or more groups on an ordinal or continuous outcome variable. If the sample size for each group is a minimum of 5, the Kruskal-Wallis test uses the same distribution as chi-square. The other tests listed are not appropriate for comparing three or more groups or do not use the same distribution as chi-square.

Which Nonparametric Test for Ordinal Data Uses the Same Distribution