Wilcoxon Signed Rank Test Calculator
Run a Wilcoxon signed-rank test on up to 8 paired differences to get the W statistic and an approximate p-value.
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Run a Wilcoxon signed-rank test on up to 8 paired differences to get the W statistic and an approximate p-value.
Wilcoxon Signed Rank Test Estimator
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How It Works
Key concepts behind this calculator
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Wilcoxon Quick Guide
Typical values for reference.
| Case | Differences | Ranks | Result |
|---|---|---|---|
| Mostly positive | 2.1, 1.5, -0.4, 3.2… | 1 negative rank | Small W |
| Balanced | 1, -1.2, 0.8, -0.9… | Even ranks | W near mean |
| All positive | 1 to 8 | W = 0 | Strong effect |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Wilcoxon Signed Rank Calculator FAQ
Answers to common questions about this calculator.
For paired data when differences are not normally distributed.
No, it uses a normal approximation, so check exact tables for small samples.
W = smaller of the positive and negative rank sums; z = (W – n(n+1)/4) / sqrt(n(n+1)(2n+1)/24).
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.