Question: Suppose we run a regression on a data set of Xs and Ys and obtain a least squares line of Y = 12 - 3X.

Suppose we run a regression on a data set of X’s and Y’s and obtain a least squares line of Y = 12 - 3X.

a. If we double each value of X, what is the new least squares line?

b. If we triple each value of Y, what is the new least squares line?

c. If we add 6 to each value of X, what is the new least squares line?

d. If we subtract 4 from each value of Y, what is the new least squares line?

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