Question

Suppose a​ least-squares regression line is given by y=4.302x−3.293. What is the mean value of the...

Suppose a​ least-squares regression line is given by y=4.302x−3.293.

What is the mean value of the response variable if x=20?

u^y/20=

​(Round to one decimal place as​ needed.)

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Answer #1

The mean value of the response variable for x=20 is nothing but the value , regressor of y i.e takes at x=20

therefore answer is 4.302*20 - 3.293 = 82.747. = 82.7 (rounding off)

Therefore   ​​​​​​ = 82.7

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