Which of the following dispersions of scores for two groups,A and B,best illustrates the null hypothesis for a Mann-Whitney U test?
A) A, B, A, B, A, B, A, B
B) A, A, B, B, A, B, B, A
C) B, A, B, A, A, B, A, B
D) A, A, A, A, B, B, B, B

Question

Quizplus · Accepted Answer

The null hypothesis for a Mann-Whitney U test posits that there is no difference between the distributions of the two groups. Choice A, with an alternating pattern of A and B, best illustrates this concept, suggesting no significant difference in the ranks between groups A and B.

Which of the Following Dispersions of Scores for Two Groups,A