For the data in Problem 4, find the best single exponential smoothing model by evaluating the MSE for a from 0.1 to 0.9, in increments of 0.1. How does this model compare with the best moving average model found in Problem 4?
Alpha MSE
0.1 ....... 1787.36
0.2 ....... 1430.95
0.3 ....... 1272.33
0.4 ....... 1199.04
0.5 ....... 1169.81
0.6 ....... 1171.71
0.7 ....... 1202.25
0.8 ....... 1262.54
0.9 ....... 1355.16
Data in Problem 4

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Month March April May June July August September 270 October Forecast 150 220 205 256 250 260 Actual Sales 170 229 192 241 238 210 225 179 280