To test the hypothesis, the Wilcoxon signed-rank test uses a:
A) z statistic.
B) t test statistic.
C) chi-square statistic.
D) Student's t statistic.

Question

Quizplus · Accepted Answer

The Wilcoxon signed-rank test is a non-parametric alternative to the dependent t-test. It does not assume normality or equal variances in the data. The test calculates a signed rank for each difference score between two related samples and uses the sum of ranks as the test statistic. This sum of ranks is then compared to a critical value from the t distribution with n-1 degrees of freedom, where n is the number of pairs. Therefore, the Wilcoxon signed-rank test uses a t test statistic.

To Test the Hypothesis, the Wilcoxon Signed-Rank Test Uses A