What is the mean absolute percentage error if the forecasts for periods 1-10 are in order, 176.6, 174.2, 176.1, 178.7, 160.4, 165.4, 177.7, 191.1, 191.0, and 175.2?
A) 5.8
B) 5.6
C) 5.4
D) 5.2
Answer: B
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