BUSN 603 Problem Set 4

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Part 1 of 3 - Part 1
20.0 Points
Develop a four-month moving average forecast for Wallace Garden Supply and compute the
MAD. A three-month moving average forecast was developed in the table attached
1. The four-month moving average forecast for Wallace Garden Supply is ___________. (Please
round it to an integer and include no units.)
2. The Mean Absolute Deviation (MAD) for the above forecast is ___ . (Please round it to two
decimal points.)
Part 2 of 3 - Part 2
45.0 Points
Data collected on the yearly demand for 50-pound bags of fertilizer at Wallace Garden Supply
are shown in the table attached. Develop a 3-year moving average to forecast sales. Then
estimate demand again with a weighted moving average in which sales in the most recent year
are given a weight of 2 and sales in the other 2 years are each given a weight of 1.
3. The three-year moving average forecast for Wallace Garden Supply is

4. The Mean Absolute Deviation (MAD) for the above moving average forecast is ___ . (Please
round it to two decimal points.)
5. The three-year ​weighted​ moving average forecast for Wallace Garden Supply is __ . (Please
round it to an integer and include no units.)
6. The Mean Absolute Deviation (MAD) for the above ​weighted​ moving average forecast is ___ .
(Please round it to two decimal points.)
7. Based on your previous calculation, which method do you think is the best?
8. The starting /initial forecast for the sales of Cool-Man air conditioners is _________. (Please
round it to an integer and include no units.)
9. The ​Year 2 forecast​ for the sales of Cool-Man air conditioners is ____. (Please round it to an
integer and include no units.)
10. The ​Year 6 forecast​ for the sales of Cool-Man air conditioners is ___. (Please round it to two
decimal points and include no units.)
11. The Mean Absolute Deviation (MAD) for the above exponential smoothing forecast is ___ .
(Please round it to two decimal points.)