Problem $3-22($Algo$)$

Your manager is trying to determine what forecasting method to use. Based upon the following historical data, calculate the following forecast and specify what procedure you would utilize.

MONTH ACTUAL DEMAND

$152$

$255$

$357$

$467$

$573$

$675$

$776$

$877$

$977$

$1079$

$1180$

$1282$

a$.$ Calculate the simple three$-$month moving average forecast for periods $4$ to $12.$

Note: Round your answers to $3$ decimal places.