The Spearman rank-correlation test is a nonparametric test that uses the directions of differences observed in a matched-pairs sample to determine whether the relative frequency distributions of two statistical populations are identical to or different from one another.

Question

Quizplus · Accepted Answer

The Spearman rank-correlation test measures the strength and direction of association between two ranked variables, rather than comparing relative frequency distributions of two populations.

The Spearman Rank-Correlation Test Is a Nonparametric Test That Uses