Blog.

Provocative title, I know... but I have learned so much about the misuse of this forecast error measure this past year and I would like to share with you what I've learned and what you can use instead of MAPE. The Problem Most companies rely on forecast accuracy metrics such as MAPE (Mean Absolute Percentage Error) and RMSE (Root Mean Squared Error) to evaluate how well their demand forecasts perform. These measures are intuitive and easy to communicate, but they become misle