Welch's t-test
In statistics, Welch's t-test, or unequal variances t-test, is a two-sample location test which is used to test the hypothesis that two populations have equal means. It is named for its creator, Bernard Lewis Welch, and is an adaptation of Student's t-test, and is more reliable when the two samples have unequal variances and/or unequal sample sizes. These tests are often referred to as "unpaired" or "independent samples" t-tests, as they are typically applied when the statistical units underlying the two samples being compared are non-overlapping. Given that Welch's t-test has been less popular than Student's t-test and may be less familiar to readers, a more informative name is "Welch's unequal variances t-test" — or "unequal variances t-test" for brevity.
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Welch's t-test
In statistics, Welch's t-test, or unequal variances t-test, is a two-sample location test which is used to test the hypothesis that two populations have equal means. It is named for its creator, Bernard Lewis Welch, and is an adaptation of Student's t-test, and is more reliable when the two samples have unequal variances and/or unequal sample sizes. These tests are often referred to as "unpaired" or "independent samples" t-tests, as they are typically applied when the statistical units underlying the two samples being compared are non-overlapping. Given that Welch's t-test has been less popular than Student's t-test and may be less familiar to readers, a more informative name is "Welch's unequal variances t-test" — or "unequal variances t-test" for brevity.
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En statistique, le test t de W ...... du problème de Behrens–Fisher.
@fr
In statistics, Welch's t-test, ...... variances t-test" for brevity.
@en
Test t Welcha – test statystyc ...... nowi przybliżone rozwiązanie .
@pl
t-критерий Уэлча — тест, основ ...... тистика Бернарда Льюиса Уэлча.
@ru
統計学において、ウェルチのt検定(ウェルチのtけんてい、英: ...... ることが意図されている。ウェルチのt検定は、の近似解である。
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En statistique, le test t de W ...... du problème de Behrens–Fisher.
@fr
In statistics, Welch's t-test, ...... variances t-test" for brevity.
@en
Test t Welcha – test statystyc ...... nowi przybliżone rozwiązanie .
@pl
t-критерий Уэлча — тест, основ ...... тистика Бернарда Льюиса Уэлча.
@ru
統計学において、ウェルチのt検定(ウェルチのtけんてい、英: ...... ることが意図されている。ウェルチのt検定は、の近似解である。
@ja
label
T-критерий Уэлча
@ru
Test t Welcha
@pl
Test t de Welch
@fr
Welch's t-test
@en
ウェルチのt検定
@ja