The nonparametric alternative to the Pearson correlation coefficient is the
A) Wilcoxon matched-pairs signed-ranks test.
B) Mann-Whitney test.
C) Kruskal-Wallis test.
D) Spearman test.

Question

Quizplus · Accepted Answer

The best choice is the Spearman test as it is a nonparametric measure of correlation based on the ranks of the data, which is similar to the Pearson coefficient but does not assume that the data are normally distributed. The other options are tests for group differences rather than correlation between variables.

The Nonparametric Alternative to the Pearson Correlation Coefficient Is the