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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Vydané v:	Tutorials in quantitative methods for psychology Ročník 12; číslo 1; s. 30 - 38
Hlavní autori:	Derrick, B., White, P.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Université d'Ottawa 01.01.2016
Predmet:	Behrens-Fisher problem Equality of means Independent samples t-test Welchs approximation Welchs test
ISSN:	1913-4126, 1913-4126
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