quintile
noun /ˈkwɪntaɪl/
  /ˈkwɪntaɪl/
(statistics- one of five equal groups into which a set of things can be divided according to the distribution of a particular variable五分位数;五分位值 - men in the first quintile of weight (= the heaviest 20% of men)体重在第一个五分位组的男性(即最重的 20% 男性) 
 词源early 17th cent.: from Latin quintilis (mensis) ‘fifth month, July’, from quintus ‘fifth’.
- men in the first quintile of weight (= the heaviest 20% of men)