Using the Data Shown Below in Table 1, Compute the Mean

question 20

Multiple Choice

Using the data shown below in Table 1, compute the mean square error, mean absolute deviation, and mean absolute percentage error for the forecasts shown and then answer Questions
Table 1
$\begin{array}{|l|c|c|}\hline \text { Month } & \text { Forecast Demand } & \text { Actual Demand } \\\hline \text { April } & 170 & 180 \\\hline \text { May } & 225 & 200 \\\hline \text { June } & 210 & 200 \\\hline \text { July } & 260 & 240 \\\hline \text { August } & 200 & 230 \\\hline\end{array}$
-The mean absolute percentage error (MAPE) is:

• A) less than or equal to 5%.
• B) more than 5% but less than or equal to 10%.
• C) more than 10% but less than or equal to 15%.
• D) more than 15% but less than or equal to 20%.

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Definitions:

Hypotenuse

The longest side of a right-angled triangle, opposite the right angle, calculated with the Pythagorean theorem.

Inches

A unit of length in the British imperial and United States customary systems of measurement, equal to 1/12 of a foot.

Hypotenuse

The longest side of a right-angled triangle, opposite the right angle, calculated as the square root of the sum of the squares of the other two sides.

Right Angle

An angle of 90 degrees.