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MAPE meaning in Academic & Science ?

Answer» What is Mean Absolute Percentage Error mean?

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:

MAPE = 100 n ∑ t = 1 n | A t − F t A t | {\displaystyle {\mbox{MAPE}}={\frac {100}{n}}\sum _{t=1}^{n}\left|{\frac {A_{t}-F_{t}}{A_{t}}}\right|}

where At is the actual value and Ft is the forecast value. Their difference is divided by the actual value At. The absolute value in this ratio is summed for every forecasted point in time and divided by the number of fitted points n.

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