Data collected on the yearly demand for 50-pound bags of fertilizer at Wallace Garden Supply are shown as 4, 6, 4, 7, 8, 10, 12, 17, 13, 17, 19 (from year 1 to year 11). Firslty, 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. Then find MSE value for this weighted moving averages forecast. Lütfen birini seçin:

a. 11.773

b. 3.149

c. 5.653

d. 8.215

e. 9.757