Table 11.9.
$$\begin{array} { | c | c | c | }
\hline \text { Quarter } & \begin{array} { c }
\text { Forecasted } \
\text { Demand } \
\text { (Units) }
\end{array} & \begin{array} { c }
\text { Actual } \
\text { Demand } \
\text { (Units) }
\end{array} \
\hline 1 & 85 & 95 \
2 & 55 & 55 \
3 & 70 & 45 \
4 & 60 & 75 \
\hline
\end{array}$$
-Use the information in Table 11.9. What is the standard deviation of forecast errors for the data?
A) 0 units
B) greater than 0, but less than or equal to 10 units
C) greater than 10, but less than 20 units
D) greater than 20 units

Question

Table 11.9.
$$\begin{array} { | c | c | c | } 
\hline \text { Quarter } & \begin{array} { c } 
\text { Forecasted } \
\text { Demand } \
\text { (Units) }
\end{array} & \begin{array} { c } 
\text { Actual } \
\text { Demand } \
\text { (Units) }
\end{array} \
\hline 1 & 85 & 95 \
2 & 55 & 55 \
3 & 70 & 45 \
4 & 60 & 75 \
\hline
\end{array}$$
-Use the information in Table 11.9. What is the standard deviation of forecast errors for the data?
A) 0 units
B) greater than 0, but less than or equal to 10 units
C) greater than 10, but less than 20 units
D) greater than 20 units

Quizplus · Accepted Answer

The forecast errors are 10, 0, -25, and 15. The standard deviation of these errors is calculated as approximately 16.58 units, which falls between 10 and 20 units.

Table 119 -Use the Information in Table 11