Question: How do you calculate the Exponential Smoothing to get 20, 22.2, 24.96, 27.568, 30.454? 7. The following historical data have been collected representing sales of

How do you calculate the Exponential Smoothing to

How do you calculate the Exponential Smoothing to get 20, 22.2, 24.96, 27.568, 30.454?

7. The following historical data have been collected representing sales of a product. Compare forecasts using a three-period moving average, exponential smoothing with an a = 0.2, and linear regression. Using MAD and MSE, which forecasting model is best? Are your results the same using the two error measures? Week Demand 1 20 2 31 3 36 4 38 Solution Week Demand 3-period moving average Exponential smoothing Absolute Error Squared Error 1 20 20 11 121 31 36 22.2 13.8 190.44 38 29 24.96 13.04 170.04 42 35 27.568 14.432 208.28 40 38.67 30.454 9.545 2356 4 Absolute Error 9 7 1.33 10 5 6 42 40 Squared Error 81 49 1.78 91.118

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