You would like to test whether male or female managers incubate teams with higher employee satisfaction. You therefore run the Mann-Whitney test on the data. What do you expect will be approximately equal in the two groups if you accept the null hypothesis?
A) Means
B) Ranks
C) Variance
D) Mean ranks

Question

Quizplus · Accepted Answer

In the Mann-Whitney test, the null hypothesis assumes that there is no significant difference in the distribution of ranks between the two groups being compared. Therefore, if we accept the null hypothesis, we expect the mean ranks of the two groups to be approximately equal. Choice A (means) and Choice C (variance) are not relevant in non-parametric tests like the Mann-Whitney test since they do not assume normality of the data. Choice B (ranks) is incorrect because the Mann-Whitney test is based on comparing the ranks of the observations between the groups, so the ranks themselves are not expected to be equal between the groups.

You Would Like to Test Whether Male or Female Managers