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Dean made a statistical estimation of the cost-output relationship for a shoe store. The data for the firm is given in the following table. x 4.5 7 9 10 15 20 33 50 y 3 3.3 3.4 3.5 4.5 5.5 7.5 12 Here x is the output in thousands of pairs of shoes, and y is the cost in thousands of dollars. (Use 4 decimal places.) A. Determine the best-fitting line (using least squares). S1(x) =        r2 =          B. Determine the best-fitting quadratic (using the least squares) and the square of the correlation coefficient. S2(x) =

Dean made a statistical estimation of the cost-output relationship for a shoe store. The data for the firm is given in the following table. x 4.5 7 9 10 15 20 33 50 y 3 3.3 3.4 3.5 4.5 5.5 7.5 12 Here x is the output in thousands of pairs of shoes, and y is the cost in thousands of dollars. (Use 4 decimal places.) A. Determine the best-fitting line (using least squares). S1(x) =        r2 =          B. Determine the best-fitting quadratic (using the least squares) and the square of the correlation coefficient. S2(x) =

MATLAB: An Introduction with Applications
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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Dean made a statistical estimation of the cost-output relationship for a shoe store. The data for the firm is given in the following table.

x 4.5 7 9 10 15 20 33 50
y 3 3.3 3.4 3.5 4.5 5.5 7.5 12


Here x is the output in thousands of pairs of shoes, and y is the cost in thousands of dollars. (Use 4 decimal places.)
A. Determine the best-fitting line (using least squares).
S1(x) = 

 
 
 


r2 = 

 
 
 

 
B. Determine the best-fitting quadratic (using the least squares) and the square of the correlation coefficient.
S2(x) = 

 
 
 

 

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