21. Two different forecasting techniques (FI and F2) were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows: PREDICTED DEMAND Period Demand F1 F2 1 68 66 2 75 68 3 70 70 4 74 72 16 8 RANTA 5 69 74 6 72 76 7 80 78 8 78 80 What is the MAD for forecast technique 1? What is the MSE for forecast technique 2? What is the MAPE for forecast technique 12 (Please use decimal format with 4 digits after the decimal point.)