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 …

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

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

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

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 …