A particular forecasting model was used to forecast a six$-$month period. Here are the forecasts and actual demands that resulted:

Month

Forecast

Actual

April

$260$

$210$

May

$335$

$260$

June

$410$

$332$

July

$360$

$310$

August

$385$

$335$

September

$460$

$403$

Question $23(4$ points$)$

Listen

What is the MAD? $($Round your answer to $1$ decimal place$)$

Question $23$ options:

a$)$

$67\mathrm{.}7$

b$)$

$60\mathrm{.}0$

c$)$

$50\mathrm{.}0$

d$)$

$62\mathrm{.}5$

Question $24(4$ points$)$

Listen

What is the tracking signal? $($Round your answer to $1$ decimal place$)$

Question $24$ options:

a$)$

$-5\mathrm{.}0$

b$)$

$-2\mathrm{.}0$

c$)$

$-6\mathrm{.}0$

d$)$

$-1\mathrm{.}0$

Question $25(4$ points$)$

Listen

Decide whether your forecasting method being used is acceptable. Which of the following answer is not true?

Question $25$ options:

a$)$

The model is not acceptable since the tracking signal indicates that it is moving in a downward direction.

b$)$

The model is consistently under$-$forecasting demand.

c$)$

The model is performing poorly and is not acceptable.

d$)$

The model is consistently over$-$forecasting demand.