YEAR	DEMAND FOR FERTILIZER (1000S OF BAGS)
1	4
2	6
3	4
4	5
5	10
6	8
7	7
8	9
9	12
10	14
11	15

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.

A. The three-year moving average forecast for Wallace Garden Supply is . (Please round it to two decimal points and include no units.)

B. The Mean Absolute Deviation (MAD) for the above moving average forecast is . (Please round it to two decimal points.)

C. The three-year weighted moving average forecast for Wallace Garden Supply is . (Please round it to an integer and include no units.)

D. The Mean Absolute Deviation (MAD) for the above weighted moving average forecast is . (Please round it to two decimal points.

E. Based on your previous calculation, which method do you think is the best?

A.3-year moving average.
B.3-year weighted moving average.