Question: 16. The data from exercise 2 follow. xi 3 12 6 20 14 yi 55 40 55 10 15 The estimated regression equation for these

16. The data from exercise 2 follow.

xi 3 12 6 20 14 yi 55 40 55 10 15 The estimated regression equation for these data is yˆ = 68 − 3x.

a. Compute SSE, SST, and SSR.

b. Compute the coefficient of determination r2. Comment on the goodness of fit.

c. Compute the sample correlation coefficient.

17. The data from exercise 3 follow.

xi 2 6 9 13 20 yi 7 18 9 26 23

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