quartile
/ˈkwɔː(ɹ)taɪl/ noun, verb
Forms quartiles quartiling quartiled
- noun (statistics) Any of the three points that divide an ordered distribution into four parts, each containing a quarter of the population.
- noun (statistics) Any one of the four groups so divided. “This school is ranked in the first quartile.”
- verb (transitive) To divide into quartiles.
Etymology
From Middle French quartil, from Medieval Latin quartilus. By surface analysis, quart + -ile.
Webster’s 1913
- noun Same as Quadrate.
Etymology [F.quartile aspect, fr. L. quartus the fourth. See Quart.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “quartile”, CC BY-SA 4.0. Details