Unformatted text preview: those diﬀerences are and also explain why they happened.) For the remaining problems, use the imitation cash oﬀers of Problem 22.15 ( ch25pr15.dat ) in the text. 4. Compare the analysis of the twoway ANOVA model, ignoring sales volume, to the twoway ANCOVA model. Explain diﬀerences in your conclusions from the two analyses. 5. For the factor age , perform Tukeyadjusted comparson of the 3 diﬀerent levels. Does the conclusion of this analysis change when going from the twoway ANOVA model to the twoway ANCOVA model? 1...
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This note was uploaded on 03/15/2012 for the course STAT 512 taught by Professor Staff during the Fall '08 term at Purdue.
 Fall '08
 Staff
 Statistics

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