Mann–Whitney U Test Calculator

Добавлено 2026-08-29Обновлено 2026-10-03

Compare two independent groups with the Mann–Whitney U test using ranked observations and a tie-corrected normal approximation.

✓ Runs locally in your browser✓ No account or dataset upload required✓ Effect sizes / uncertainty shown where appropriate

Group ANumbers may be separated by commas, spaces, semicolons or new lines.

Group BNumbers may be separated by commas, spaces, semicolons or new lines.

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z approximation

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Two-sided p

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Effect size r

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Rank-biserial correlation

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Statistical output is a calculation aid. Check assumptions, study design and reporting requirements before drawing scientific conclusions.

Об этом инструменте

Compare two independent groups with the Mann–Whitney U test using ranked observations and a tie-corrected normal approximation.

Common uses

mann whitney u test calculatormann-whitney calculatorwilcoxon rank sum calculatornonparametric two sample test

Как это работает

1Enter or paste the requested sample values, summary inputs or contingency data.
2Choose the method, confidence level or test options when available, then run the calculation.
3Review the estimate/test statistic together with p-value, confidence interval, effect size and method notes where available.

Часто задаваемые вопросы

Does this statistics calculation upload my data?

No. Entered values are processed locally in your browser with JavaScript.

Should I interpret statistical significance by itself?

No. Review effect size, confidence intervals, study design, assumptions, sampling and multiplicity together with the p-value.

Is the p-value exact for small samples?

This calculator uses a continuity-corrected normal approximation with tie correction. For very small samples or exact-inference requirements, confirm with software that provides exact permutation distributions.

Mann–Whitney U Test Calculator

Как это работает

Часто задаваемые вопросы

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