V2EX decile

Decile

释义 Definition

decile(名词):十分位 / 十分位数。统计学中把一组数据按从小到大排列后,平均分成 10 份所得到的分界点或对应的区间;常用于描述收入、成绩、风险等分布(如“最低十分位”“最高十分位”)。
(也可指“其中的某一成/十分之一群体”。)

发音 Pronunciation

/dsal/

例句 Examples

The top decile of earners pays a large share of the total tax.
收入最高的十分位人群缴纳了总税收中很大一部分。

After ranking the test scores, we compared students in the bottom decile with those in the top decile to see the gap.
将考试成绩排序后,我们比较了最低十分位与最高十分位的学生,以观察差距。

词源 Etymology

来自拉丁语 decimus(“第十的”)这一词根(dec- 表示“十”),经由法语/英语构词演变而来;在统计语境中引申为“把总体分成十等份”的概念。

相关词 Related Words

文学与著作 Literary Works

  • Thomas Piketty, Capital in the Twenty-First Century(《21世纪资本论》):讨论收入/财富分布时频繁使用 decile(如 top decile)。
  • Richard Wilkinson & Kate Pickett, The Spirit Level(《平等的代价》):分析社会不平等与健康/社会指标时常以分位组(含 deciles)呈现数据。
  • Anthony B. Atkinson, *Inequality: What Can Be Done?*(《不平等:我们能做什么》):用分位(包括十分位)讨论政策影响与分布变化。
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