Type I Error Inflation of the Separate-Variances Welch t test with Very Small Sample Sizes when Assumptions Are Met

被引：8

作者：

Adusah, Albert K. ^{[1
]}

Brooks, Gordon P. ^{[1
]}

机构：

[1] Ohio Univ, Educ Res & Evaluat, Athens, OH 45701 USA

来源：

JOURNAL OF MODERN APPLIED STATISTICAL METHODS | 2011年 / 10卷 / 01期

关键词：

Small sample sizes; type I error inflation; Welch t test; Student t test;

D O I：

10.22237/jmasm/1304224320

中图分类号：

O21 [概率论与数理统计]; C8 [统计学];

学科分类号：

020208 ; 070103 ; 0714 ;

摘要：

This Monte Carlo study shows that the separate-variances Welch t test has inflated Type I error rates at very small sample sizes, especially when sample sizes are very small in one group and larger in the second group - even when all assumptions for the statistical test are met.

引用

页码：362 / 372

页数：11

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