Given forecast errors of −5, -10, and 15, what is the mean absolute deviation?
A) 0
B) 5
C) 10
D) 30
E) None of the answer choices is correct.

Question

Quizplus · Accepted Answer

Mean absolute deviation is calculated by taking the mean of the absolute values of the forecast errors. The absolute values of -5, -10, and 15 are 5, 10, and 15 respectively. The mean of these absolute values is (5+10+15)/3= 10. Therefore, the mean absolute deviation is 10. Hence, the correct option is (C).

Given Forecast Errors of −5, -10, and 15, What Is