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Unformatted text preview: those dierences are and also explain why they happened.) For the remaining problems, use the imitation cash oers of Problem 22.15 ( ch25pr15.dat ) in the text. 4. Compare the analysis of the two-way ANOVA model, ignoring sales volume, to the two-way ANCOVA model. Explain dierences in your conclusions from the two analyses. 5. For the factor age , perform Tukey-adjusted comparson of the 3 dierent levels. Does the conclusion of this analysis change when going from the two-way ANOVA model to the two-way ANCOVA model? 1...
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- Fall '08