Skip to main content

Power calculator for Comparison of means

Input
Required alpha level (P): 
Observed Difference: 
Standard deviation group 1: 
Standard deviation group 2: 
Sample size in group 1: 
Sample size in group 2: 

How to cite this page

  • MedCalc Software Ltd. Power calculator for Comparison of means | MedCalc. https://www.medcalc.org/en/calc/power-comparison-of-means.php (Version 23.6.1; accessed July 15, 2026)
Trusted by researchers worldwide — download the full MedCalc statistical software and perform advanced statistical analysis in seconds. No registration required.

https://www.medcalc.org/en/calc/power-comparison-of-means.php

© 2026 MedCalc Software Ltd