Computes statistical power analyses for a number of various tests, including F tests, χ2 tests and z tests. Computes effect sizes and shows graphics of the results of power analyses. Supports two input mode: distribution-based and design-based. Offers five various types of power analyses.
G*Power is a statistical power analysis program. It is a major extension of, and improvement over, the previous version, covering many different statistical tests of the F, t, chi-square, and z test families as well as some exact tests. G*Power 3 provides improved effect size calculators and graphics options, it supports both a distribution-based and a design-based input mode, and it offers five different types of power analyses. Like its predecessors, G*Power 3 is free.
v3.1 [Apr 28, 2010]
- Fixed a problem with the effect size drawers of "ANOVA: Fixed effects". The drawers now appear correctly after clicking on the "Determine" button.
