mean absolute error (MAE) → μέσο απόλυτο σφάλμα
In statistics, mean absolute error (MAE) is a measure of errors between paired observations expressing the same phenomenon. Examples of Y versus X include comparisons of predicted versus observed, subsequent time versus initial time, and one technique of measurement versus an alternative technique of measurement.
https://en.wikipedia.org/wiki/Mean_absolute_errormittlerer absoluter Fehler
error absoluto medio