1. A student is comparing accuracy of two forecasting methods. Calculate MAD and MSE. Which method is more accurate using MAD? Which method is more accurate using MSE?

4. A student is comparing accuracy of two forecasting methods. Calculate MAD and MSE. Which method is more accurate using MAD? Which method is more accurate using MSE? Actual Sales Forecast Method A Abs Error Error 5 5 Error? Forecast Method B Abs Error Error -3 3 Error 50 45 25 53 9 44 33 11 11 121 45 -1 1 1 69 80 -11 11 121 73 -4 4 16 77 80 -3 3 9 80 -3 3 9 90 95 -5 5 25 85 5 5 25 10 100 105 -S 5 25 Month January February March April May June July August September October November December Total 100 120 56 110 110 60 -10 10 -4 10 100 0 0 0 120 60 4 16 -4 4 16 70 80 -10 10 100 72 4 -2 -5 u N 55 60 -5 5 25 60 25 68 78 -10 10 100 70 -2 2 4 98 80 18 18 324 100 -2 2 4 -14 102 1,066 923 -26 36 138