percentile
(US centile) n
(a) (in statistics) any of 99 points at which a range of data is divided to make 100 groups of equal size (统计学上的)百分位数.
(b) any of these groups 百分位数之一
an examination score in the 85th percentile, ie a score higher than 85 per cent of all scores attained in an examination 第85百分位的考分(高於考试中总得分的85%的分数).