Question: Using the data shown below, compute the mean square error, mean absolute deviation, and mean absolute percentage error for the forecasts 1 and 2 shown.

Using the data shown below, compute the mean square error, mean absolute deviation, and mean absolute percentage error for the forecasts 1 and 2 shown. Interpret your result which forecast is better? Month Sales (At) Forecast 1 (Ft) Forecast 2 (Ft) Jan 35 30 33 Feb 29 28 32 Mar 39 43 35 Apr 42 40 45 May 51 48 52

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