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Any of the 100 equal groups into which a distribution of scores can be divided, or the value of a variable such that a specified percentage of scores, arranged in order or magnitude, fall below that value, the 95th percentile, for example, being the value of the variable such that 95 per cent of the other scores fall below that value. The 25th, 50th, and 75th percentiles are also quartiles, and the 50th percentile is the median of any distribution. A percentile is also called a centile. See also partile. Compare decile, quartile. [From Latin per centum out of every hundred]

Subjects: Psychology.

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