Mean Absolute Deviation Percent (MADP)

Mean Absolute Deviation/Error (MAD or MAE) and divides it by the average of the actuals. When choosing between error methods, MADP is preferable to MAPE because it does not skew error rates approaching or at zero. MADP is represented by the following formula:

MADP formula

A Quick Guide to Measures of Forecast Error
Additional forecast error methods include: