Question: In exercise 7 a sales manager collected the following data on x = annual sales and y 5 years of experience. The estimated regression equation

In exercise 7 a sales manager collected the following data on x = annual sales and y 5 years of experience. The estimated regression equation for these data is y = 80 + 4x.

a. Compute SST, SSR, and SSE.
b. Compute the coefficient of determination r2. Comment on the goodness of fit.
c. What is the value of the sample correlationcoefficient?

Years of Experience Annual Sales ($1,000s) Salesperson 103 10 10 10 13

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a The estimated regression equation and the mean for the dependent variable are 80 4 x 108 ... View full answer

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