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say it: KWAWR-til
quartile is a noun meaning "(statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores". It carries one recorded sense.
(statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores
statistics
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for quartile come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.