G*Power Publisher's description
G*Power 3 is a major extension of, and improvement over, G*Power 2.
G*Power 3 is a major extension of, and improvement over, G*Power 2. It covers statistical power analyses for many different statistical tests of the
z test families and some
G*Power 3 offers five different types of statistical power analysis:
A priori (sample size N is computed as a function of power level 1-ОІ, significance level О±, and the to-be-detected population effect size)
Compromise (both О± and 1-ОІ are computed as functions of effect size, N, and an error probability ratio q = ОІ/О±)
Criterion (О± and the associated decision criterion are computed as a function of 1-ОІ, the effect size, and N)
Post-hoc (1-ОІ is computed as a function of О±, the population effect size, and N)
Sensitivity (population effect size is computed as a function of О±, 1-ОІ, and N)
G*Power 3 provides improved effect size calculators and graphics options. It supports both a distribution-based and a design-based input mode.
What's New in This Release:В· Fixed a bug in the ANCOVA module. Changing the number of covariates now correctly leads to the appropriate change in the denominator degrees of freedom.
System Requirements:No special requirements.
Program Release Status: New Release
Program Install Support: Install and Uninstall