Question: 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 section on

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 section on moving averages in Table5.3.

MONTH January February March April May June July August September October November December January ACTUAL SHED SALES 10 12 13 16 19 23 26 30 28 18 16 14 3-MONTH MOVING AVERAGE (10+12+13)/3 = 11.67 (121316)/3 13.67 (131619)/3 16.00 (16+1923)/3 19.33 (19 2326)/3 22.67 (23 2630)/3 26.33 (26 + 30 + 28)/3 = 28.00 (30 +2818)/3 25.33 (281816)/3 20.67 (1 8 + 1 6 + 14)/3 1 6.00

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