In any of the multiple comparison techniques (Tukey-Kramer, LSD ), the estimate of the within-sample variance uses

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In any of the multiple comparison techniques (Tukey-Kramer, LSD ), the estimate of the within-sample variance uses data from the entire experiment. However, if one were to do a two-sample t -test to determine if there were a difference between any two means, the estimate of the population variances would only include data from the two specific samples under consideration. Explain this seeming discrepancy.
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Business Statistics A Decision Making Approach

ISBN: 9780133021844

9th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry

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