Suppose that the last four months of sales were 8, 10, 15, and 9 units, respectively. Suppose further that the last four forecasts were 5, 6, 11, and 12 units, respectively. What is the Mean Absolute Deviation (MAD) of this forecasting period?

A. 2

B. - 10

C. 5.5

D. 9

E. 10.5

Question

Giovanna Mcbride

20 December, 15:14

+1

Answers (1)

Know the Answer?

Dahlia Cox · Answer 1

-25.5

Explanation:

First, we find the Mean

= 5+6+11+12=34

Absolute mean value = (5-34) + (6-34) + (11-34) + (12-34) = - 102/4=-25.5

Suppose that the last four months of sales were 8, 10, 15, and 9 units, respectively. Suppose further that the last four forecasts were 5, 6, 11, and 12 units, respectively. What is the Mean Absolute Deviation (MAD) of this forecasting period?A. 2B. - 10C. 5.5D. 9E. 10.5