Calculate power & sample size for one-sample, two-sample and k-sample experiments. Advanced power and sample size calculator online: calculate sample size for a single group, or for …

Calculator to determine the minimum number of subjects to enroll in a study for adequate power.

Calculate required sample sizes for statistical tests with specified power and effect size. Free tool for experimental design planning.

Use our power analysis calculator to determine the minimum number of subjects for adequate study power.

Choose which calculation you desire, enter the relevant population values for mu1 (mean of population 1), mu2 (mean of population 2), and sigma (common standard deviation) and, if …

Free Power Analysis Calculator to determine the optimal sample size for a study. Calculate statistical power, effect size, or significance level with ease.

To use the calculator, select which parameter you want to calculate, then provide values for the other parameters. The graph shows how the target parameter changes as either sample size …

Enter effect size, variability, significance level, and sample size to compute statistical power. Optionally, estimate the required sample size for a target power.

Determine the optimal sample size for your research with this comprehensive power analysis calculator. Features support for multiple statistical tests including t-tests, ANOVA, correlation, …

Statistical power analysis is a critical component of research design and grant proposals. This calculator helps researchers determine the optimal sample size required to detect meaningful …