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Year Quarter Q1 Q2 Q3 Period Sales 1 1 1 0 0 1 1690 2 0 1 0 2 940 3 0 0 1 3
| Year | Quarter | Q1 | Q2 | Q3 | Period | Sales |
| 1 | 1 | 1 | 0 | 0 | 1 | 1690 |
| 2 | 0 | 1 | 0 | 2 | 940 | |
| 3 | 0 | 0 | 1 | 3 | 2625 | |
| 4 | 0 | 0 | 0 | 4 | 2500 | |
| 2 | 1 | 1 | 0 | 0 | 5 | 2145 |
| 2 | 0 | 1 | 0 | 6 | 1175 | |
| 3 | 0 | 0 | 1 | 7 | 3350 | |
| 4 | 0 | 0 | 0 | 8 | 2720 | |
| 3 | 1 | 1 | 0 | 0 | 9 | 2388 |
| 2 | 0 | 1 | 0 | 10 | 1948 | |
| 3 | 0 | 0 | 1 | 11 | 3575 | |
| 4 | 0 | 0 | 0 | 12 | 3455 |
Calculating MAE (mean absolute error).
MAE = ?
Correct Answer
109.23
Please explain why this is the correct answer and SHOW ME STEP BY STEP IN EXCEL
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A First Course in Differential Equations with Modeling Applications
Authors: Dennis G. Zill
10th edition
978-1111827052
