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Behav Res Methods. 2007 May;39(2):175-91.

G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences.

Author information

  • 1Institut für Psychologie, Christian-Albrechts-Universität Kiel, Kiel, Germany. ffaul@psychologie.uni-kiel.de

Abstract

G*Power (Erdfelder, Faul, & Buchner, 1996) was designed as a general stand-alone power analysis program for statistical tests commonly used in social and behavioral research. G*Power 3 is a major extension of, and improvement over, the previous versions. It runs on widely used computer platforms (i.e., Windows XP, Windows Vista, and Mac OS X 10.4) and covers many different statistical tests of the t, F, and chi2 test families. In addition, it includes power analyses for z tests and some exact tests. G*Power 3 provides improved effect size calculators and graphic options, supports both distribution-based and design-based input modes, and offers all types of power analyses in which users might be interested. Like its predecessors, G*Power 3 is free.

PMID:
17695343
[PubMed - indexed for MEDLINE]
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