Question: How to solve with calculations please The data set below provides seven days of actual demand with six Naive forecasts. The forecast error in each
How to solve with calculations please

The data set below provides seven days of actual demand with six Naive forecasts. The forecast error in each period is also provided. Use this data to answer the determine a] The Mean Absolute Deviation (MAD): Eb] The Cumulative Forecast Error [CFE]: Period Demand Forecast Error [I] [Dr] [Ft] (Ed 1 1,255 2 1,290 1,255 35 3 1,252 1,290 -38 4- 1,292 1,252 40 5 1,315 1,292 23 5 1,308 1,315 -7 7 1,235 1,303 -22
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