Question:
In Period 1, the predicted value of the Mexican peso was $0.13 and the realized value was $0.14. In period 2, the predicted value was $0.14 and the realized value was $0.12. In period 3, the predicted value was $0.13 and the realized value was $0.15. Calculate the mean absolute forecast error as a percentage of the realized value. Show how you derive your answer.