期刊
JOURNAL OF EDUCATIONAL AND BEHAVIORAL STATISTICS
卷 27, 期 4, 页码 335-340出版社
SAGE PUBLICATIONS INC
DOI: 10.3102/10769986027004335
关键词
hypothesis testing; internal consistency; interval estimation; sample size determination; test reliability
An approximate test and confidence interval for coefficient alpha are derived. The approximate test and confidence interval are then used to derive closed-form sample size formulas. The sample size formulas can be used to determine the sample size needed to test coefficient alpha with desired power or to estimate coefficient alpha with desired precision. The sample size formulas closely approximate the sample size requirements for an exact confidence interval or an exact test.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据