Glossary - median
(A.k.a. 50 percentile.) One of the three measures of the central tendency. This is the value that separates the upper half of a set of values from the lower half, and we compute it by listing the values and taking the middle one (or the average of two middle ones if there is an even number of elements). Then half of the elements have values above the median and half have values below.
This entry was last updated on 5 August 2008