The sales manager of a large automotive parts distributor, Hartman Auto Supplies, wants to develop a model
Question:
a. Analyze the correlation matrix.
b. How much error is involved in the prediction for region 1?
c. Forecast the annual sales for region 12, given 2,500 retail outlets and 20.2 million automobiles registered.
d. Discuss the accuracy of the forecast made in part c.
e. Show how the standard error of the estimate was computed.
f. Give an interpretation of the partial regression coefficients. Are these regression coefficients sensible?
g. How can this regression equation be improved?
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