2.3

initial estimate? 2.2 Consider the following data for airplane sales from 2006 to 2012. Use a 3-year moving average model and a linear trend model to forecast the sales in 2013. Which model is likely to give you a better result 40 70 80 2.3 Consider the following noise-free data gewrated from the linear trend model d=2+31. Show that using the method illustrated in Figure 29 to estimate the initial slope and level, a double exponential smoothing method will provide noise-free forecast no matter whate and values are used 11 12 1 Tiene Demand LO 2232 11 14 17