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Chapter 4: Q. 4.88 (page 181)

In Exercises 4.88 - 4.97, we repeat the data and provide the regression equations for Exercises 4.48-4.57. In each exercise.

a. compute the three sums of squares, SST. SSR, and SSE, using the defining formulas (Definition 4.6 on page 177 .

b. verify the regression identify, SST=SSR+SSE

c. compute the coefficient of determination.

d. determine the percentage of variation in the observed values of the response variable that is explained by the regression.

e. state how useful the regression equation appears fo be for making predictions.

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