calculate the weighted moving avergae for feb, mar, April, May and June only.

Let a $=0\mathrm{.}5,$ Foct$2012=22$

Simple moving average$=4$ months

WMA$=(4$ months $0\mathrm{.}1,0\mathrm{.}2,0\mathrm{.}3,0\mathrm{.}4($ highest weight on most recent data point$)$

Product B Oct$-12$ Nov Dec$-13$ Jan Feb mar

Actual Demand $25253110811$

Apr May Jun

actual demand $11912$