Data from the Previous 5 Months of a Forecasting Method

question 72

Multiple Choice

Data from the previous 5 months of a forecasting method is shown below. What is the mean absolute deviation? $$\begin{array} { | c | c | c | c | } \hline \text { Actual } & \text { Forecast } & \text { Error } & \mid \text { Error } \mid \\\hline 12 & 13 & - 1 & 1 \\\hline 10 & 12 & - 2 & 2 \\\hline 12 & 10 & 2 & 2 \\\hline 8 & 8 & 0 & 0 \\\hline 11 & 10 & 1 & 1 \\\hline\end{array}$$

• A) −1.2
• B) 0.0
• C) 6.0
• D) 1.2

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