Question: 2. The following demand data was collected over a three-year period for one product. a. Use the data to develop a regression-based forecasting considering seasonal

2. The following demand data was collected over a

2. The following demand data was collected over a three-year period for one product. a. Use the data to develop a regression-based forecasting considering seasonal impacts. b. Use the data to develop a three-period weighted moving averages method. c. Compare a and b using MAD values. d. Give the best forecast for the 1st month of 4th year using the best method of a or b. Demand, year 1 72 Month 1 2 3 4 5 6 7 8 9 10 67 85 99 87 135 127 131 102 Demand, year 2 84 98 86 113 121 140 133 156 125 134 118 102 Demand, year 3 97 119 138 124 143 162 157 178 136 141 122 120 96 11 88 79 12

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