Unbiased Estimator of Effect Size and Its Linear Model

10.29973/JCSA.200812.0004

Chien-Hua Wu；Shu-Mei Wan；Yen-Hung Chen

Confidence interval ； contrast ； effect size ； linear model ； minimum variance ； unbiased estimator

中國統計學報

46卷4期（2008 / 12 / 01）

309 - 320

英文

Effect size is an important and a widely used measure of the magnitude of mean. Increasingly editors of journals that publish research are recommending, or requiring, the reporting of estimates of effect size. In this article, we propose unbiased estimators of effect sizes for paired t-test, two-sample t-test and contrast among means, and develop the basic theory of linear model between the effect size and the independent variables.

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