For the exponential smoothing method, choose the first quarter of 2008 as the beginning of the forecast. Make two forecast, one with α = 0.10 and one with α = 0.30.
Using the MAD and Tracking Signal method of testing the forecast performance, plus actual data, how well did the model perform?
Using the decomposition of a time series method of forecasting (i.e., trend and seasonal), forecast the last 2 quarters of 2011 and of all four quarters of 2012.