quartile
noun
- the three points that divide the data set into four equal groups in descriptive statistics
Wiktionary
Pronunciation: /ˈkwɔː(ɹ)taɪl/
noun
Etymology: From Middle French quartil, from Medieval Latin quartilus. By surface analysis, quart + -ile.
- Any of the three points that divide an ordered distribution into four parts, each containing a quarter of the population.
- Any one of the four groups so divided.
“This school is ranked in the first quartile.”
“The Department for Transport's National Travel Survey shows that workers in the lowest income quartile are twice as likely to use public transport.”
verb
Etymology: From Middle French quartil, from Medieval Latin quartilus. By surface analysis, quart + -ile.
- To divide into quartiles.