4. In #3, which method (if any) is most appropriate? (4)
a. Exponential smoothing.
c. Regression with seasonal indices.
d. None of the above.
5. In #3, which of the following is most appropriate regarding sales? (4)
a. We should use all of the data in our model.
b. We should use only periods 5-16 in our model.
c. We should use only periods 9-16 in our model.
d. We should use only periods 13-16 in our model.
e. We should use only periods 1-12 in our model.
6. Refer to the Excel output on the final pages. Here, we are tracking the number of orders
placed by week for a 20-week period. The first set of output is for an exponential
smoothing model with
= 0.25. The second set of output is for a regression. Which of
the following is most appropriate? (3)
a. The exponential smoothing model is most appropriate.
b. The regression is most appropriate.
c. Another model would be more appropriate.
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