Question: The following data represents the actual demand and three different sets of forecasts using different methods. Compute the MAD for each forecasting method and determine

The following data represents the actual demand and three different sets of

forecasts using different methods. Compute the MAD for each forecasting

method and determine the best method for this set of data.

Year-Qtr Actual Forecast-1 MAD1 Forecast-2 MAD2 Forecast-3 MAD3 Demand |A-F| |A-F| |A-F|

2018-3 98 89 97 84

2018-4 110 104 112 108

2019-1 83 68 70 66

2019-2 100 101 102 98

2019-3 95 87 86 85

2019-4 90 92 94 88

2020-1 71 68 72 70

2020-2 105 104 106 101

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