Refer back to the experiment in Exercise 21. Instead of mpg redo the analysis using log (mpg)
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Refer back to the experiment in Exercise 21. Instead of mpg redo the analysis using log (mpg) as the response. Do your conclusions change? How? Are the assumptions of the model better satisfied?
In Exercise 21
An experiment to test a new gasoline additive, Gasplus, was performed on three different cars: a sports car, a minivan, and a hybrid. Each car was tested with both Gasplus and regular gas on 10 different occasions and their gas mileage was recorded. Here are the partial box plots:
A plot of the residuals vs. predicted values showed:
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Related Book For
Stats Data And Models
ISBN: 662
4th Edition
Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
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