When regression analysis is performed according to the given x and y values, what is the x value to be obtained for y = 500 in the calculated equation (y = ax + b)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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26

26 -

F30 

x;         y

45 ;    210

67 ; 330

12;   80

9 ;    29

99;      500

15;     50

38 ;    150

28;    120

 

 

 

 

When regression analysis is performed according to the given x and y values, what is the x value to be obtained for y = 500 in the calculated equation (y = ax + b)

 

 

 
 A)

100,7878

 B)

97,99

 C)

-67,1147

 D)

101,107

 E)

Hiçbiri/ none of them

Expert Solution
Step 1

mean of x = xn = 39.125

mean of y  = yn = 183.625

standard deviation of x = (xi-x)2n-1 = 31.0458

standard deviation of y = (yi-y)2n-1 = 160.3104

covariance of x,y = (xi-x)(yi-y)n-1 = 4945.2

 

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