Consider an experiment designed to compare four treatment means1, 2, 3, and 4using sample sizes of size
Question:
a. Suppose the sample sizes are the same: n1 = n2 = n3 = n4. Show that s2W is the average of the four sample variances: s2W = (s21, + s22, + s23, + s24)/4.
b. Does this hold if the sample sizes are not equal? If not, why not just use the average?
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a We have that n 1 n 2 n 3 n 4 Let the common sample siz...View the full answer
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Related Book For
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
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