6h. 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 = 83 + 4x. Salesperson Years of Experience Annual Sales ($1,000s) 1 1 80 2 3 97 3 4 102 4 4 107 5 6 103 6 8 116 7 10 119 8 10 123 9 11 127 10 13 136 (a) Compute SST, SSR, and SSE. SST=SSR=SSE= (b) Compute the coefficient of determination r2. (Round your answer to three decimal places.) r2 = (c) What is the value of the sample correlation coefficient? (Round your answer to three decimal places.)
6h. 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 = 83 + 4x. Salesperson Years of Experience Annual Sales ($1,000s) 1 1 80 2 3 97 3 4 102 4 4 107 5 6 103 6 8 116 7 10 119 8 10 123 9 11 127 10 13 136 (a) Compute SST, SSR, and SSE. SST=SSR=SSE= (b) Compute the coefficient of determination r2. (Round your answer to three decimal places.) r2 = (c) What is the value of the sample correlation coefficient? (Round your answer to three decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
6h.
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 = 83 + 4x.
| Salesperson | Years of Experience |
Annual Sales ($1,000s) |
|---|---|---|
| 1 | 1 | 80 |
| 2 | 3 | 97 |
| 3 | 4 | 102 |
| 4 | 4 | 107 |
| 5 | 6 | 103 |
| 6 | 8 | 116 |
| 7 | 10 | 119 |
| 8 | 10 | 123 |
| 9 | 11 | 127 |
| 10 | 13 | 136 |
(a)
Compute SST, SSR, and SSE.
SST=SSR=SSE=
(b)
Compute the coefficient of determination
r2.
(Round your answer to three decimal places.)r2
= (c)
What is the value of the sample correlation coefficient ? (Round your answer to three decimal places.)
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