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In statistics, Welch's t-test, or unequal variances t-test, is a two-sample location test which is used to test the (null) 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 , [ 1 ] and is more reliable when the two samples have unequal variances and ...
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Download QR code; Print/export Download as PDF; Printable version; In other projects ... Location test: Homoscedasticity [9] Welch's t-test: interval: normal ...
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Welch was appointed to the Chair in Statistics in 1968. Following the establishment of the School of Mathematics, he was appointed Head of the newly created Department of Statistics where he remained until his retirement Welch retired in 1976. In June 1989, he suffered a stroke; on 29 December 1989 Welch died as a result of it.
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