The primary purpose of the mean absolute deviation (MAD) in forecasting is to

A) estimate the trend line.
B) eliminate forecast errors.
C) measure forecast accuracy.
D) seasonally adjust the forecast.
E) all of the above.

Mean Absolute Deviation

A measure of the average absolute differences between each number in a set of values and the mean of the values.

Forecast Accuracy

The degree to which predicted outcomes align with actual results, often used in planning and decision-making processes.