Question: A forecasting method has produced the following over the past five months. What is the mean absolute deviation (MAD)? Actual 10 8 10 6 9

A forecasting method has produced the following

A forecasting method has produced the following over the past five months. What is the mean absolute deviation (MAD)? Actual 10 8 10 6 9 Forecast 11 10 8 6 8 Error -1 -2 2 0 1 Error 1 2 2 0 1 a.-0.2 O b.-1.0 O c.0.0 O d. 1.2 O e. 8.6

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