Problem

$4$

$($

Eight marks

$)$

The following table shows the demand for acertain product for eight quarters. Forecast the

demand for the last six quarters for these data using the centered moving average method:

The following table shows the demand for a certain product for eight quarters. Forecast the

demand for the last six quarters for these data using the centered moving average method:

Year

$1$

$2$

Quarter

$1$

$2$

$3$

$4$

$1$

$2$

$3$

$4$

Demand

$6$

$0$

$6$

$7$

$4$

$7$

$3$

$8$

$5$

$2$

$5$

$3$

$4$

$3$

$2$

$8$