Читать книгу The Big R-Book - Philippe J. S. De Brouwer - Страница 267

The mean is highly influenced by the outliers. To mitigate this to some extend the parameter trim allows to remove the tails. It will sort all values and then remove the x% smallest and x% largest observations.

v <- c(1,2,3,4,5,6000) mean(v) ## [1] 1002.5 mean(v, trim = 0.2) ## [1] 3.5