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.
此外，该系列研究第一次采用四分位数法对患者分组。
Furthermore, this series is the first one in which patients have been distributed according to quartile.
有两个最高四分位数的人比那些最低的人患心脏病的风险增加2.2倍。
People in the two highest quartiles had a 2.2 times increased risk of heart disease compared to those in the lowest.
如果你转而观察,难以有效定价的市场,比如大盘股,第一和第三个四分位数相差2个百分点
Then as you move out to the equity markets where it's harder to price things as efficiently--large-cap stocks -there are two-fold percentage points,first to third quartile.
即使你能找到一位,一流的经理人,但在债券市场收益中,第一和第三个四分位数之间几乎没有区别
Where even if you can find somebody who's going to be a first quartile manager, there's almost no difference between the first quartile return and the third quartile return.
用其他三个四分位数联合作为对照，通过每个营养素的下四分位数计算出优势比(ORs)。
Odds ratios (ORs) were calculated for the lowest quartile of each nutrient using the other 3 quartiles combined as the reference group.
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.
应用推荐