Question: A forecasting method has produced the following over the past five months. What is the mean absolute deviation? Month Actual Forecast 1 121 110 2
A forecasting method has produced the following over the past five months. What is the mean absolute deviation?
| Month | Actual | Forecast |
| 1 | 121 | 110 |
| 2 | 120 | 116 |
| 3 | 125 | 130 |
| 4 | 110 | 120 |
| 5 | 98 | 113 |
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