Question: The realized demand values and forecast values for a simple exponential smoothing model with alpha=.2 are provided in the table below. The cumulative sum of

The realized demand values and forecast values for a simple exponential smoothing model with alpha=.2 are provided in the table below. The cumulative sum of the forecast errors is (Round to two decimals.) The mean absolute deviations is (Round to two decimals) Mean Squared Error is (Round to two decimals) Mean Absolute Percent Error is (Round to two decimals.)

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