Sample size for Correlation coefficient

Determine the required sample size for a test for a Pearson correlation coefficient. The test assesses whether the correlation between two variables differs significantly from zero.

Input
Type I error - Alpha:
Type II error - Beta:

Correlation coefficient:
Result
Minimum required sample size:

For details, see the MedCalc manual: Sample size: Correlation coefficient.

How to cite this page

MedCalc Software Ltd. Sample size for Correlation coefficient. https://www.medcalc.org/en/calc/sample-size-correlation-coefficient.php (Version 24.0.3; accessed November 7, 2026)

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