quar.tile
n.Statistics （名词）【统计学】 The value of the boundary at the 25th, 50th, or 75th percentiles of a frequency distribution divided into four parts, each containing a quarter of the population.四分位值：在被分成四部分频数分布中位于25，50或75点的边界值，每部分包含四分之一人口
来源：Middle English [ninety degrees apart (of the relative position of two celestial bodies)] 中古英语 [（两个天体的相对位置）分开成九十度] from Old French quartil 源自 古法语 quartil from Medieval Latin qu3rtolis [of a quartile] 源自 中世纪拉丁语 qu3rtolis [四分位（值）点的] from Latin qu3rtus [fourth] * see quart 源自 拉丁语 qu3rtus [第四] *参见 quart
