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

Published in:	Tutorials in quantitative methods for psychology Vol. 12; no. 1; pp. 30 - 38
Main Authors:	Derrick, B., White, P.
Format:	Journal Article
Language:	English
Published:	Université d'Ottawa 01.01.2016
Subjects:	Behrens-Fisher problem Equality of means Independent samples t-test Welchs approximation Welchs test
ISSN:	1913-4126, 1913-4126
Online Access:	Get full text
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