How much of the computerized data that currently exist worldwide were created in the past five years? 90% 50% 10% 100% Question 2 What is the major problem with using MAPE as a way of evaluating forecasts? When demand planners over-rely on MAPE, they can miss obvious errors that the MAD and MSE will tend to highlight. MAPE is not a global standard for demand planners, and so it is hard to compare forecasts across cultures and contexts. Users of the forecast are more focused on the financial implications of the forecast than the error itself, and MAPE does not help much with real-world decision making. MAPE is a calculation that is very sensitive to outliers and therefore cannot be trusted when making long-term forecasts