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.
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页码：362 / 372
页数：11
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