Question: 27. If the forecast errors for four consecutive periods are 7, 5, -4, and 8, then the mean absolute deviation (IvfAfa) over those four periods

27. If the forecast errors for four consecutive periods are 7, 5, -4, and 8, then the mean absolute deviation (IvfAfa) over those four periods is: A. 4.0 B. 5.0 C. 5.3 D. 6.0 E. 7.0

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