In the Wilcoxon signed-rank test, if two or more measurements have the same nonzero difference, then:
A) the scores are removed from the analysis.
B) the scores are assigned the lowest rank of the tied values.
C) the scores are assigned the highest rank of the tied values.
D) the scores are assigned the mean of the ranks of the tied values.

Question

Quizplus · Accepted Answer

When two or more measurements have the same nonzero difference, the scores are assigned the mean of the ranks of the tied values. This is known as the midrank method and is the most common method used in the Wilcoxon signed-rank test.

In the Wilcoxon Signed-Rank Test, If Two or More Measurements