A researcher needs to conduct a suitable nonparametric test to compare two dependent variables. Which of the following should he use?
A) t-test
B) Wilcoxon rank sum test
C) Wilcoxon signed-rank test
D) Kruskal-Wallis test

Question

Quizplus · Accepted Answer

The Wilcoxon signed-rank test is a suitable nonparametric test for comparing two dependent variables. It is designed to compare two related samples by testing the differences between the pairs of observations. The other options listed are not appropriate for comparing dependent variables. The t-test is a parametric test that is used to compare the means of two independent samples, while the Wilcoxon rank sum test and Kruskal-Wallis test are both used to compare the medians of two or more independent samples.

A Researcher Needs to Conduct a Suitable Nonparametric Test to Compare