Why Welchs test is Type I error robust

The comparison of two means is one of the most commonly applied statistical procedures in psychology. The independent samples t-test corrected for unequal variances is commonly known as Welchs test, and is widely considered to be a robust alternative to the independent samples t-test. The properties...

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Bibliographic Details
Main Authors: Derrick, B., White, P.
Format: Article
Language:English
Published: Université d'Ottawa 2016-01-01
Series:Tutorials in Quantitative Methods for Psychology
Subjects:
Online Access:http://www.tqmp.org/RegularArticles/vol12-1/p030/p030.pdf