Program handling

Perform a Power Analysis

Using G*Power 3 typically involves the following three steps:

1. Select the statistical test appropriate for your problem.
   
2. Choose one of the five types of power analysis available
3. Provide the input parameters required for the analysis and click "Calculate".

Plot parameters

In order to help you explore the parameter space relevant to your power analysis, one parameter (α, power (1-β), effect size, or sample size) can be plotted as a function of another parameter.