Chapter 14.3, Problem 90E

In Exercises 14.88–14.97, we repeat the data and provide the regression equations for Exercises 14.48–14.57. In each exercise,

1. a. compute the three sums of squares. SST, SSR, and SSE, using the defining formulas (Definition 14.6 on page 639).
2. b. verify the regression identity. SST = SSR + SSE.
3. c.       compute the coefficient of determination.
4. d.      determine the percentage of variation in the observed values of the response variable that is explained by the regression.
5. e.       state how useful the regression equation appears to be for making predictions.

14.90

ŷ = 1 + 2x