1.Observed weekly sales of ball peen hammers at the town hardware store over a five-week period have been 16, 12, 28, 24, 32.

(1)Suppose that three-week moving averages are used to forecast sales. Determine the one-step-ahead forecasts for weeks 4 and 5.

(2)Suppose that exponential smoothing is used to with a smoothing constant of =0.2.Find the exponential smoothing forecasts for weeks 4 and 5. (To get the method started, use the same forecast for week 4 as you used in part (1).)

(3)Based on the MAD, which method did better?