GPOWER: A general power analysis program
GPOWER: A general power analysis program
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DOI：
10.3758/bf03203630
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发表时间：
1996-02-01
期刊：
影响因子：
--
通讯作者：
Buchner, A
中科院分区：
文献类型：
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作者：
Erdfelder, E;Faul, F;Buchner, A
GPOWER是一个完全交互的、菜单驱动的程序，适用于IBM兼容的和Apple Macintosh个人电脑。它对行为研究中最常见的统计检验执行高精度的统计功率分析，即t检验、F检验和chi(2)检验。GPOWER计算(1)给定样本大小、效应大小和阿尔法水平的功率值(特别后功率分析)；(2)给定效应大小、阿尔法水平和功率值的样本大小(先验功率分析)；以及(3)给定样本大小、效应大小和贝塔/阿尔法比率的阿尔法和贝塔值(折衷功率分析)。该程序可用于以图形方式显示任何两个相关变量之间的关系，并且它提供了从定义备选假设的基本参数计算效果大小度量的机会。本文描述了开发GPOWER的原因，并描述了该程序的功能和处理。
GPOWER is a completely interactive, menu-driven program for IBM-compatible and Apple Macintosh personal computers. It performs high-precision statistical power analyses for the most common statistical tests in behavioral research, that is, t tests, F tests, and chi(2) tests. GPOWER computes (1) power values for given sample sizes, effect sizes and alpha levels (post hoc power analyses); (2) sample sizes for given effect sizes, alpha levels, and power values (a priori power analyses); and (3) alpha and beta values for given sample sizes, effect sizes, and beta/alpha ratios (compromise power analyses). The program may be used to display graphically the relation between any two of the relevant variables, and it offers the opportunity to compute the effect size measures from basic parameters defining the alternative hypothesis. This article delineates reasons for the development of GPOWER and describes the program's capabilities and handling.