quartile

noun

1. Any of the three points that divide an ordered distribution into four parts, each containing a quarter of the population.
2. 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.”

   “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.”

   “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.”

verb

1. (transitive)To divide into quartiles.