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The managers of Artel are asked to forecast production yields (measured in percent) one week ahead for their plants. The results of their predictions are given in the following spreadsheet. Interpret P1 as the forecast made by the manager of plant 1 at the beginning of each week, 01 as the yield observed at the end of each week in plant 1, and E1 as the difference between the predicted and the observed yields. The same definitions apply to plant 2. Which of the following are TRUE: Week P1 92 87 95 88 88 93 01 88 88 97 83 91 93 |E1| 4 1 2. E1^2 16 1 4 25 9 0 3-MHOOOOO |E1/01 0.045 0.011 0.021 0.060 0.033 0 P2 96 89 92 93 90 85 02 91 90 90 90 86 89 E21 5 1 2 3 4 4 E2^2 25 1 4 |E2/Q2 0.055 0.011 0.022 0.033 0.047 0.045 9 5 3 16 16 0 The MAD for plant 1 equals 2.5. The MAPE for plant 2 is less than plant 1. The overall performance for the first manager's forecast is better. The MSE for plant 2 equals 11.83