Question: Given the following demand data for the past five months, the three-period moving average forecast for June is Period Demand January 120 February 90 March

Given the following demand data for the past five months, the three-period moving average forecast for June is Period Demand January 120 February 90 March 100 April 75 May 110 S. For the demand values and the January forecast shown in the table below, the exponential smoothing forecast for April using = 0.30 is Period Demand Forecast January 500 480 February 476 March 503 April S. A forecasting model has produced the following forecasts: Period Demand Forecast Error January 120 110 February 110 115 March 115 120 April 125 115 May 130 125 The mean absolute deviation (MAD) for the end of May is

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