Mean absolute percentage error
MEASURE OF PREDICTION ACCURACY OF A FORECAST
MAPE; Mean Absolute Percentage Error; Real aggregated percentage error; MAPD; WMAPE; Weighted Mean Absolute Percentage Error
The mean absolute percentage error (MAPE), also known as mean absolute percentage deviation (MAPD), is a measure of prediction accuracy of a forecasting method in statistics. It usually expresses the accuracy as a ratio defined by the formula: