This nonparametric test requires at least ordinal level data. t is used if the assumptions required for the paired t test cannot be met. Which test is it?
A) Wilcoxon signed-rank test
B) ANOVA
C) Rank correlation
D) Kruskal-Wallis

Question

Quizplus · Accepted Answer

The Wilcoxon signed-rank test is a nonparametric test that is used when the assumptions required for the paired t test cannot be met. It requires at least ordinal level data, which can be converted to ranks. The other options are not appropriate in this scenario. ANOVA is used for comparing means of three or more groups, rank correlation is used to measure the strength of association between two variables, and Kruskal-Wallis is used for comparing medians of three or more groups.

This Nonparametric Test Requires at Least Ordinal Level Data