Professor Christian De Rojas 1. Exercise One: Given the following time series, and using your knowledge of forecasting, as shown in class - compute, (a) the annual averages of your data, (b) the yearly proportions, (c) the seasonal indices, (d) the deseasonalized series, (e) tabulate the actual vs. deseasonalized series, (f) plot the actual vs. the deseasonalized series, (g) forecast the deseasonalized value for the first quarter of 2006, (h) forecast the actual value for the first quarter of 2006. (Hint: Use the Forecasting with Seasonality Module as your guide). Year Quarter Actual 2003 1 62 2 54 3 53 4 65 2004 1 65 2 56 3 54 4 79 2005 1 66 2 58 3 57 4 85