Wilcoxon Signed-Rank Test Calculator
Raw Paired Data (5 pairs)
From W-Statistic
Formula
W = min(W+, W-). z = (W - n(n+1)/4) / sqrt(n(n+1)(2n+1)/24)
Frequently Asked Questions
What is the Wilcoxon signed-rank test?
A non-parametric test for paired data that tests whether the median difference between pairs is zero.
When should I use Wilcoxon instead of a paired t-test?
Use it when paired differences are not normally distributed, with ordinal data, or when you want robustness to outliers.
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