quartile

plural quartiles

1. mathematicsAny of the three points that divide an ordered distribution into four parts, each containing a quarter of the population.
2. mathematicsAny one of the four groups so divided.

   This school is ranked in the first quartile.

   3 more examples

   The Department for Transport's National Travel Survey shows that workers in the lowest income quartile are twice as likely to use public transport.

   2021 July 28, Paul Clifton, “Network News: Confusion and dissent over face mask requirements: Reaction to the Guidance: British Safety Council”, in RAIL, number 936, page 6

   In June 2021, the top-income quartile of Chase customers had a median cash buffer of 43 days, while the lowest-income quartile had a median cash buffer of 22 days.

   2023 July 18, Elisabeth Buchwald, “Americans aren’t rebuilding their savings fast enough”, in CNN Business, archived from the original on 17 Aug 2023

   Total activity levels in the lowest quartile were equivalent to walking for 49 minutes at roughly 3 miles (4.8 kilometers) per hour daily. Total activity levels in the second-, third- and fourth-highest quartiles were equivalent to 78, 105 and 160 minutes, respectively.

   2024 November 15, Kristen Rogers, “Want to live an extra 5 to 10 years? Adopt this habit, study suggests”, in CNN, archived from the original on 11 Jul 2025

present singular third person quartiles · participle present quartiling · participle past quartiled · past quartiled

1. transitiveTo divide into quartiles.