Which of the following conditions distinguishes a Kruskal-Wallis test from a Mann-Whitney test?
A)the measurement scale of the dependent variable
B)the number of levels of the independent variable
C)the measurement level of independent variable
D)whether or not the independent variable is within-subjects

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is used to compare three or more independent groups, while the Mann-Whitney test is used for comparing two independent groups. Therefore, the number of levels of the independent variable distinguishes between these two tests, and choice B is the correct answer. The measurement scale of the dependent variable, measurement level of independent variable, and whether the independent variable is within-subjects do not distinguish between these two tests.

Which of the Following Conditions Distinguishes a Kruskal-Wallis Test from a Mann-Whitney