V2EX quartile

Quartile

释义 Definition

quartile(四分位数):把一组按大小排序的数据分成四等份的分界点之一。常见的有第一四分位数 Q1(25%)第二四分位数 Q2(中位数,50%)第三四分位数 Q3(75%)。也可指处在某个四分位区间内的数据。

发音 Pronunciation (IPA)

/kwrtal/(美式常见)
/kwtal/(英式常见)

例句 Examples

The test score is in the top quartile.
这个分数处在最高的四分位区间。

After sorting the incomes, we compared the median and quartiles to see how unevenly wealth is distributed across the population.
把收入排序后,我们比较了中位数和各四分位数,以观察财富在不同人群中的分布有多不均衡。

词源 Etymology

来自拉丁语 quartus(“第四”)相关词根,经法语影响进入英语;quart- 表示“四分之一/四”,**-ile** 为名词后缀。该词在统计学语境中用于表示“把数据分成四等份时的分界点”。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • The Visual Display of Quantitative Information(Edward R. Tufte)
  • How to Lie with Statistics(Darrell Huff)
  • The Signal and the Noise(Nate Silver)
  • Freakonomics(Steven D. Levitt & Stephen J. Dubner)
  • Introductory Statistics(常见统计学教材,多版本)
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