LO$18-2$

$3.$ Given the following history, use a three$-$quarter moving average to forecast the demand for the third quarter of this year. Note: the $1$st quarter is Jan, Feb, and Mar; the $2$nd quarter is Apr, May, and Jun; the $3$rd quarter is Jul, Aug, Sep; and the $4$th quarter is Oct, Nov, and Dec.

Table Summary: A table with $13$ columns. The first column lists the years. The second to thirteenth columns are titled January, February, March, April, May, June, July, August, September, October, November, and December, respectively,

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

Last Year $100125135175185200150140130200225250$

This Year $125135135190200190$