The statistics used for the Mann-Whitney U test measure _________.
A) the mean differences between the two groups
B) the direction of the differences between pairs of scores
C) the power of the experiment
D) the separation between the two sets of scores

Question

Quizplus · Accepted Answer

The Mann-Whitney U test measures the separation between the two sets of scores, also known as the rank sum difference, in order to determine if there is a significant difference between two groups. It does not measure mean differences (A), direction of differences (B), or power (C).

The Statistics Used for the Mann-Whitney U Test Measure _________