Observed weekly sales of ball peen hammers at the town hardware store over an eight-week period have been 14, 9, 30, 22, 34, 12, 19, 23.a. Suppose that three-week moving averages are used to forecast sales. Determine the one-step-ahead forecasts for weeks 4 through 8.b. Suppose that exponential smoothing is used with a smoothing constantof a = .15. Find the exponential smoothing forecasts for weeks 4 through 8.[To get the method started, use the same forecast for week 4 as you used in part (a).]c. Based on the MAD, which method did better?d. What is the exponential smoothing forecast made at the end of week 6 for the sales in week 12?
Observed weekly sales of ball peen hammers at the town hardware store over an eight-week period have been 14, 9, 30, 22, 34, 12, 19, 23.a. Suppose that three-week moving averages are used to forecast sales. Determine the one-step-ahead forecasts for weeks 4 through 8.b. Suppose that exponential smoothing is used with a smoothing constantof a = .15. Find the exponential smoothing forecasts for weeks 4 through 8.[To get the method started, use the same forecast for week 4 as you used in part (a).]c. Based on the MAD, which method did better?d. What is the exponential smoothing forecast made at the end of week 6 for the sales in week 12?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Observed weekly sales of ball peen hammers at the town hardware store over an eight-week period have been 14, 9, 30, 22, 34, 12, 19, 23.
a. Suppose that three-week moving averages are used to forecast sales. Determine the one-step-ahead forecasts for weeks 4 through 8.
b. Suppose that exponential smoothing is used with a smoothing constant
of a = .15. Find the exponential smoothing forecasts for weeks 4 through 8.
[To get the method started, use the same forecast for week 4 as you used in part (a).]
c. Based on the MAD, which method did better?
d. What is the exponential smoothing forecast made at the end of week 6 for the sales in week 12?
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