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

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