One of the assumptions of the Wilcoxon signed-rank test is that the distribution of the population of difference scores is:
A) skewed.
B) symmetric.
C) bimodal.
D) normal.

Question

Quizplus · Accepted Answer

The Wilcoxon signed-rank test assumes that the distribution of the population of difference scores is symmetric around a median. This non-parametric test does not require the assumption of normality, making it suitable for data that does not meet the normality assumption required by parametric tests like the paired t-test.

One of the Assumptions of the Wilcoxon Signed-Rank Test Is