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 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 1^st month of 4^th year using the best method of a or b. 2. The following demand data was collected over a

Month 1 2 3 4 5 6 7 Demand, year 1 72 67 85 99 87 135 127 131 102 96 88 79 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 8 9 10 11 12

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