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


D

Business

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