Question: The mean absolute deviation (MAD) for the forecasts shown in the following table is: a. more than 20 but less than or equal to 30

The mean absolute deviation (MAD) for the forecasts shown in the following table is: a. more than 20 but less than or equal to 30 . b. more than 30 but less than or equal to 40 . c. more than 40 but l 
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