B C D E Instruction: Please use weighted moving average method (4 periods) to forecast the demand for peirods 5-13 Weighted Moving Average Forecast (4 periods) Description Weight Fourth most recent period 0.1 Third most recent period 03 7 Second most recent perio 0.2 3 Most recent period 0.4 9 Total 1 10 11 Period Actual Dema Forecast 12 1 1,200 13 2 2,200 14 3 2.000 15 4 1,300 16 5 2.500 17 6 3.500 18 7 3.300 19 8 3.200 20 9 4,300 21 10 4.800 22 4.400 23 12 4,100 24 13 25 26 27 28 29 31