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TRIMMEAN

TRIMMEAN

Name

TRIMMEAN -- 

Description

TRIMMEAN returns the mean of the interior of a data set. @ref is the list of numbers whose mean you want to calculate and @fraction is the fraction of the data set excluded from the mean. For example, if @fraction=0.2 and the data set contains 40 numbers, 8 numbers are trimmed from the data set (40 x 0.2), 4 from the top and 4 from the bottom of the set.

This function is Excel compatible.

Examples

Let us assume that the cells A1, A2, ..., A5 contain numbers 11.4, 17.3, 21.3, 25.9, and 40.1. Then

TRIMMEAN(A1:A5,0.2) equals 23.2.