The Wilcoxon Signed-Rank Test is the non-parametric version of the paired t-test. It is used to test whether or not there is a significant difference between two population means.
To perform a Wilcoxon Signed-Rank Test, simply fill in the data values for two samples below and then click the “Calculate” button.

Sample 1

Sample 2

W test statistic = 29.5

Number of non-tied pairs (n) = 13

Refer to the critical values table below to decide whether or not the test result is statistically significant based on n and your chosen alpha level.

If the test statistic W is less than the value found in the critical values table below, then the test result is statistically significant.