Consider the Following Time Series with Forecast Values and Errors

question 61

Multiple Choice

Consider the following time series with forecast values and errors.
$$\begin{array} { | l | l | } \hline \begin{array} { l } \text { Actual } \\\text { Demand }\end{array} & \begin{array} { l } \text { Forecast } \\\text { Demand }\end{array} \\\hline 10 & 9 \\\hline 13 & 15 \\\hline 15 & 16 \\\hline 11 & 13 \\\hline 12 & 10 \\\hline\end{array}$$
-Calculate the mean square deviation (MSD) .

• A)2.8
• B)13.4
• C)7.5
• D)1.6
• E)2.4

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