Overview

trimmed mean


Show Summary Details

Quick Reference

In statistics, the arithmetic mean calculated after eliminating a specified proportion or percentage of the largest and smallest scores, a common type being the 5 per cent trim. It is used occasionally when the set of scores contains values that are much smaller or much larger than the rest, because in such cases it yields a more useful indication of central tendency than the untrimmed mean. It was introduced in 1962 by the US statistician John Wilder Tukey (1915–2000).

Subjects: Probability and Statistics — Psychology.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.