A value on a scale that indicates the percent of a distribution that is equal to it or below it.

A score belongs to the 78th percentile, for example, if it is greater than 78% of the scores but it is not greater than 79% of the scores.

This procedure divides the scores into 100 percentiles, numbered 0th through 99th.


A group of 10 consecutive percentiles is called a decile.


25 consecutive percentiles are called a quartile.

See also: Deciles.

Previous PageView links to and from this pageNext Page

Subjects: Mathematics