3. Two different forecasting techniques (F1 and F2) were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows: Period Demand F1 F2 1 68 66 66 2 75 68 68 3 70 72 70 4 74 71 72 5 69 72 74 72 70 76 a. Compute MAD for each set of forecasts. Given your results, which forecast appears to be more accurate? b. Compute the MSE for each set of forecasts. Given your results, which forecast appears to be more accurate? Period Demand F1 e el e2 F2 e Tel e2 56 2 2 4 66 2 4 75 68 7 7 49 68 49 W N 70 72 -2 2 4 70 0 0 74 71 3 3 9 72 UI N Un N 69 72 -3 3 74 25 72 70 +2 2 76 -4 16 19 79 20 98 a. MAD F1: 19/6 = 3.17 MAD F2: 20/6 = 3.33 F1 appears to be more accurate. b. MSE F1: 79/5 = 15.8