A statistical program is recommended. A sales manager collected the following data on x = years of experience and y = annual sales ($1,000s). The estimated regression equation for these data is ŷ = 81...

Extracted text: A statistical program is recommended. A sales manager collected the following data on x = years of experience and y = annual sales ($1,000s). The estimated regression equation for these data is ŷ = 81 + 4x. Years of Annual Sales Salesperson Experience ($1,000s) 1 80 2 97 3 4 92 4 4 107 6. 103 6. 8. 111 7 10 119 8. 10 128 9. 11 117 10 13 136 (a) Compute the residuals. Years of Annual Sales Residuals Experience ($1,000s) 1 80 3 97 4 92 4 107 103 8 111


Extracted text: 8. 111 10 119 10 128 11 117 13 136 Construct a residual plot. 16 16 16 12 12 8- 8- 8. 4 4 4 -4 -4 -4 -8 -8- -8 - 12- - 12 - 12- - 16 0 2 -16 -16- 4 6 8 10 12 14 4 6 8 10 12 14 4 6 8 10 12 14 Years of Experience Years of Experience Years of Experience 16 12 8 4 -4 -8- - 12 -16 0 2 4 8 10 12 14 Years of Experience Residuals Residuals O N CO