Calculate three forecasts using the following data.First,for periods 4 through 10,develop the exponentially smoothed forecasts using a forecast for period 3 (F3)of 120.0 and an alpha of 0.3.Second,calculate the three-period moving-average forecast for periods 4 through 10.Third,calculate the weighted moving average for periods 4 through 10,using weights of .60,.30,and .10.Calculate the mean absolute deviation (MAD)and the cumulative sum of forecast error (CFE)for each forecasting procedure.Which forecasting procedure would you select? Why?
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