在统计学中,给定数据的百分位排名或称百分位等级(PR)是其次數分布(英语:frequencydistribution)中,小于该数值的数据的百分比。其数学公式为 P R = C F − ( 0.5 × F ) N × 100 , {\displaystyle PR={\frac {CF-(0.5\times
Wentian; Miramontes, Pedro. Fitting ranked English and Spanish letter frequencydistribution in US and Mexican presidential speeches. Journal of Quantitative
oregonensis and Hemigrapsus nudus and their distribution, relative abundance and size frequencydistribution at four sites in Yaquina Bay, Oregon. [2008-08-08]