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quartile

Syllabification: (quar·tile)
Definition of quartile

noun

Statistics
  • each of four equal groups into which a population can be divided according to the distribution of values of a particular variable.
  • each of the three values of the random variable that divide a population into four groups.

Origin:

late 19th century: from medieval Latin quartilis, from Latin quartus 'fourth'

quartile in other Oxford dictionaries

Definition of quartile in the British & World English dictionary