Time Actual Seasonal 1 2 3 4 71234 123412341234 Year Qtr Period Sales Level Factor Forecast 1 368 462.50 0.796 -- 9 11 234567800-23156 168 462.50 0.363 alpha beta 0.3322 1.0000 530 462.50 1.146 -- 784 462.50 1.695 MSE 76056.924 770 630.32 1.222 368.00 354 744.66 0.475 228.96 1012 790.65 1.280 853.34 1244 771.79 1.612 1340.26 1326 875.98 1.514 942.82 986 1273.96 0.774 416.43 1624 1272.25 1.276 1630.62 2090 1280.35 1.632 2050.66 1938.11 990.95 1634.35 2090.00