A sales manager collected the following data on y = annual sales and x = years of experience. The estimated regression equation for these data is y = 80 + 4x. Click on the datafile logo to reference...

A sales manager collected the following data on y = annual sales and x = years of experience. The estimated regression equation for these data is y = 80 + 4x. Click on the datafile logo to reference the data.

(NEED ANSWERS FOR A, B, C)

a.
Compute SST, SSR, and SSE.

b.
Compute the coefficient of determination r^2
.

Comment on the goodness of fit. __________ (provides a good fit / does not produce much of a fit)

c.
What is the value of the sample correlation coefficient (to 2 decimals)?

Extracted text: A sales manager collected the following data on y = annual sales and * = years of experience. The estimated regression equation for these data is y = 80 + 4x. Click on the datafile logo to reference the data. DATA File Years of Annual Sales Salesperson Experience ($1000s) 1 1 80 2 3 97 3 4 92 4 4 102 103 6. 8 111 7 10 119 10 123 9 11 117 10 13 136 a. Compute SST, SSR, and SSE. SE SST SSR b. Compute the coefficient of determination r. % Comment on the goodness of fit. - Select your answer - c. What is the value of the sample correlation coefficient (to 2 decimals)?