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Peso promedio Definición

The weighted average or weighted arithmetic mean is similar to an ordinary arithmetic mean (the most common type of average), except that instead it is used in computing a kind of arithmetic mean of a set of numbers in which some elements of the set carry more importance (weight, frequency, or relative importance) than others. The notion of weighted mean plays a role in descriptive statistics and also occurs in a more general form in several other areas of mathematics.

Si todos los pesos son iguales, entonces la media ponderada es la misma que la media aritmética. Mientras que los medios ponderados generalmente se comportan de manera similar a los medios aritméticos, tienen algunas propiedades contraintuitivas, como capturadas, por ejemplo, en la paradoja de Simpson .