Question: QUESTION 4 A forecasting method has produced the following over the past five months. What is the mean absolute deviation? Actual Forecast Error |Error 10

QUESTION 4 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 -10 O -0.2 O 0.0 O 1.2 O 8.6
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