Using the following numbers, provide the next period forecast using MA$3,$ MA$5,$ weighted $3$ period moving average $(\mathrm{.}50,\mathrm{.}33,\mathrm{.}17).$ Show an error column; the difference between the actual demand and the forecast numbers that you generate.

QTR DEMAND

$1105$

$2150$

$393$

$4121$

$5140$

$6170$

$7105$

$8150$

$9150$

$10120$

$11140$

$12130$

$13\_\_\_$