19 20 165 21. 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: PREDICTED DEMAND Period Demand F1 F2 1 68 66 66 75 68 68 2 70 72 70 3 74 71 72 4 88 BARRA 69 72 5 74 72 70 6 76 80 71 7 78 78 74 8 80 a. Compute MAD for each set of forecasts. Given your results, which forecast appears to be more accurate? Explain b. Compute the MSE for each set of forecasts. Given your results, which forecast appears to be more accurate? c. In practice, either MAD or MSE would be employed to compute forecast errors. What factors might lead a manager to choose one rather than the other? d. Compute MAPE for each data set. Which forecast appears to be more accurate? QUESTION 3 Chapter 3 problem 21 Based on given information, if we use exponential smoothing forecast with a = 0.2 to predict the demand of period 9, what will the forecast be? (Using 68 as forecast demand for period 2 keep 2 digits after the decimal point.) 73.52 74.15 76.28 None of above 6 points Save Answer QUESTION 4 Chapter 3 problem 21 What is the MAD for forecast technique 1? QUESTION 1 Chapter 3 problem 21 Based on given information, if we use 4-period moving average to predict the demand of period 9. what will the forecast be? (Keep 2 digits after the decimal point.) 73.52 74.75 76.50 None of above (K 6 points Save Answer QUESTION 2 Chapter 3 problem 21 Based on given information. If we use 4-period weighted moving average the 4 weights are (0.4, 0.3, 0.2.0.1) to predict the demand of period 9. what will the forecast be? (Keep 2 digits after the decimal point.) O 7421 76,5 7.84 None of above