Question: A forecasting method has produced the following over the past five months. What is the mean absolute deviation? Actual Forecast Error |Error| 10 11 -1

A forecasting method has produced the following over the past five months. What is the mean absolute deviation? Actual Forecast Error |Error| 10 11 -1 1 8 10 -2 2 10 8 2 2 6 6 0 0 9 8 1 1

A) -0.2 B) -1.0 C) 0.0 D) 1.2 E) 8.6

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