Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
A company has developed a linear trend model to forecast monthly sales. The following data show the actual sales and the "fitted" sales for months 1-12.

-Based on these data, what is the mean absolute deviation (MAD) for the linear trend model?

A) 81.33
B) 7976.167
C) 976
D) 95714
E) 115