1. Assume that the demand for sugar in ArbaMinch town for the last five years hasbeen observed as follows in quintals peryear.

Year	Demand
2008	20,500
2009	26,600
2010	31,300
2011	33,000
2012	35,100

Required

1. Forecast the demand for the 2013 using simple moving average of the recent four years(2. Pt)
2. Assume a weight of 0.4 has been assigned for the recent data followed by weights of0.3,

0.2 and 0.1 for the next recent figures. Based on this information, forecast demand for the year 2013 using weighted moving average method (2.Pt)