QUESTION $3(20$ Marks$)$

The information shown in the table below represents the monthly operating profit generated by Takealot

during the $2022$ financial year.

INFORMATION

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Operating profit, R

million $91422151917231820253426$

$3\mathrm{.}3.$ Calculate the Mean Absolute Percentage Error $($MAPE$)$ of the three$-$month weighted moving average

$(3$MWMA$)$ forecasts.

$(4$ marks$)$

$3\mathrm{.}4.$ Calculate the Mean Absolute Percentage Error $($MAPE$)$ of the four$-$month weighted moving average

$(4$MWMA$)$ forecasts.

$(4$ marks$)$

$3\mathrm{.}5.$ Which of the two weighted moving average methods is better at forecasting Takealot$$s monthly

operating profit?