Develop a two-period weighted moving average fore-cast for March 2012 through January 2013. Use weights of 0.6 and 0.4, with the most recent observation weighted higher. Calculate the MFE, MAD, and MAPE values for March through December.
MONTH DEMAND
January 2012 119
February............ 72
March............ 113
April............ 82
May............ 82
June............ 131
July............ 111
August ............ 116
September............ 89
October............ 95
November............ 88
December............ 90