Year 1 2 3 Quarter Demand (5000) 1 80 96 103 123 120 109 145 120 141 128 143 139 142 140 161 170 11 III IV 1 11 III IV I 11 IV || III IV Quarterly demands for flowers at a wholesaler are as shown. Forecast quarterly demand for year 5 at quarterly level using moving average, simple exponential smoothing with alpha=0.1, as well as Holt's method with beta=0.1 and alpha-0.1. Which of the two methods do you prefer? Why?
