它是上四分位数与下四分位数之间的差异。
上四分位数是25%的观察值位于其上的值。
The upper quartile is that value above which 25 per cent of the observations lie.
在范围和目的性以及清晰程度和呈现方式上的得分稍高（前者：平均得分：0.82，四分位差IQR：0.58-0.89；后者：平均得分：0.67，IQR：0.50-0.78）。
Scores were better for the domains of scope and purpose (median: 0.82, interquartile range, IQR: 0.58–0.89) and clarity and presentation (median: 0.67, IQR: 0.50–0.78).
统计中已有确定中位数、四分位数、十分位数等的方法，文章在此基础上提出三分位数的概念及其确定的方法。
There already exist Median, Quartiles and Tenth quantile etc. Based on this, the authors put out the concept and (calculation) method for tri-sectional quantiles in this article.
统计中已有确定中位数、四分位数、十分位数等的方法，文章在此基础上提出三分位数的概念及其确定的方法。
There already exist Median, Quartiles and Tenth quantile etc. Based on this, the authors put out the concept and (calculation) method for tri-sectional quantiles in this article.
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