Question: A forecasting method has produced the following over the past five months. What is the mean absolute deviation (or mean absolute error)? Actual Forecast 11

  1. A forecasting method has produced the following over the past five months. What is the mean absolute deviation (or mean absolute error)?

    Actual

    Forecast

    11

    11

    9

    10

    10

    10

    8

    10

    9

    8
    A.

    0.0
    B.

    1.0
    C.

    -0.4
    D.

    8.6
    E.

    0.8

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