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Stats Regression

Hey can anyone help me with this question please?

Given that the coding p=x+2 and q=y-3 has been used to get the regression equation p+q=5 find the equation of the regression line of y on x in the firm y=a+bx

The answer is y=6-x apparently

Thanks in advance!
(edited 8 years ago)
if you add the two equations:

p = x + 2
q = y - 3

p + q = x + y - 1

etc...

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