Which of the following best describes when to apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2?
A) The samples must be drawn from normal populations.
B) The samples must be independent.
C) The samples must be drawn from matched pairs experiment.
D) The sample size must be larger than 30.

Question

Quizplus · Accepted Answer

The Wilcoxon rank sum test (also known as the Mann-Whitney U test) is a non-parametric test for comparing two independent samples. Therefore, choice B is the correct option as it states that the samples must be independent. Choices A, C, and D do not accurately describe the conditions required for the Wilcoxon rank sum test.

Which of the Following Best Describes When to Apply the Wilcoxon