V2EX representative sample

Representative Sample

释义 Definition

代表性样本:能够较好反映总体(population)特征的一组样本数据,常用于统计、调查与研究中,以便据此推断总体情况。(在不同语境中也可泛指“具有代表性的例子/选取”。)

发音 Pronunciation (IPA)

/rprznttv smpl/

例句 Examples

We need a representative sample of students for the survey.
我们需要一份对学生群体具有代表性的样本来做调查。

Without a representative sample, the study’s conclusions may not apply to the wider population.
如果样本缺乏代表性,这项研究的结论可能无法适用于更广泛的总体人群。

词源 Etymology

representative 来自 represent(“代表、呈现”),其词根与拉丁语 repraesentare(“使……呈现出来”)相关;sample 来自中古法语/拉丁语系统中的“样品、样本”之意。合起来 representative sample 字面即“能代表总体的样本”,是统计学与社会科学研究中的核心概念。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Earl Babbie,《The Practice of Social Research》:讨论社会研究中抽样设计时频繁使用 representative sample
  • David S. Moore / George P. McCabe,《Introduction to the Practice of Statistics》:在统计推断与抽样章节中强调代表性样本的重要性。
  • Sharon L. Lohr,《Sampling: Design and Analysis》:系统论述如何获得更接近“代表性”的样本与不同抽样方法的影响。
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