# percentile

[per-sen-tahyl, -til] /pərˈsɛn taɪl, -tɪl/ Statistics.
noun
1.
one of the values of a variable that divides the distribution of the variable into 100 groups having equal frequencies:
Ninety percent of the values lie at or below the ninetieth percentile, ten percent above it.
2.
of or relating to a percentile or a division of a distribution by percentiles.
Origin of percentile
1880-1885
1880-85; percent + -ile
Can be confused
percent, percentage, percentile (see usage note at percent)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for percentile
Contemporary Examples
• These differentials, he writes “places the average black at roughly the 16th percentile of the white IQ distribution.”

• Really well, actually—in the 97th percentile on reading comprehension and the 87th in math.

April 7, 2011
• A state in the 90th percentile (with the least amount of complaints filed) was given 20 points.

January 15, 2011
• A state in the 90th percentile (with the least amount of hate crimes) was given 20 points.

January 15, 2011
• The new measure is a relative measure, pegged to (approximately) how much the 33rd percentile is spending on various things.

November 15, 2012
Historical Examples
• In height he gained from the 25 percentile to the 40 percentile.

Margaret Cobb Rogers
• In other words, the lengths of the individual vectors denote the percentile rle that each night played in the total density.

George H. Lowery.
British Dictionary definitions for percentile

## percentile

/pəˈsɛntaɪl/
noun
1.
one of 99 actual or notional values of a variable dividing its distribution into 100 groups with equal frequencies; the 90th percentile is the value of a variable such that 90% of the relevant population is below that value Also called centile
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for percentile
n.

1885, coined by English scientist Francis Galton (1822-1911) from percent + -ile.

Online Etymology Dictionary, © 2010 Douglas Harper
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percentile in Science
 percentile   (pər-sěn'tīl')    Any of the 100 equal parts into which the range of the values of a set of data can be divided in order to show the distribution of those values. The percentile of a given value is determined by the percentage of the values that are smaller than that value. For example, a test score that is higher than 95 percent of the other scores is in the 95th percentile.
The American Heritage® Science Dictionary
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### Difficulty index for percentile

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### Word Value for percentile

14
18
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