G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences.
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.
Faul
Franz
F
Institut für Psychologie, Christian-Albrechts-Universität Kiel, Kiel, Germany. ffaul@psychologie.uni-kiel.de
Erdfelder
Edgar
E
Lang
Albert-Georg
AG
Buchner
Axel
A
D000465:Algorithms; D001525:Behavioral Sciences / Q000379:methods*; D035843:Biomedical Research / Q000379:methods; D003627:Data Interpretation, Statistical; D008432:Mathematical Computing; D008838:Microcomputers; D012680:Sensitivity and Specificity; D012942:Social Sciences / Q000379:methods*; D012984:Software; D018709:Statistics, Nonparametric