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For each of the four data sets in the file P10_64.xlsx, calculate the least squares line. For which of these data sets would you feel comfortable in using the least squares line to predict Y?
Suppose you run a regression on a data set of X and Y values and obtain a least squares line of Y = 12 − 3X.
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Order Paper Nowa. If you double each value of X, what is the new least squares line? b. If you triple each value of Y, what is the new least squares line?
c. If you add 6 to each value of X, what is the new least squares line?
d. If you subtract 4 from each value of Y, what is the new least squares line?
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