V2EX coefficient

Coefficient

定义 Definition

coefficient(系数):在数学、物理或统计中,乘在变量前面的数,用来表示该变量对结果的影响大小;也可指某种“率/指数”(如相关系数、摩擦系数等)。

发音 Pronunciation

/kofnt/

例句 Examples

The coefficient of \(x\) in \(3x + 2\) is 3.
在 \(3x + 2\) 中,\(x\) 的系数是 3。

Researchers found that the correlation coefficient increased after the new method was applied, suggesting a stronger relationship between the two variables.
研究人员发现,在采用新方法后,相关系数上升,表明这两个变量之间的关系更强。

词源 Etymology

来自拉丁语 **co-**(“共同”)+ efficere(“促成、产生效果”),经法语演变为 coefficient,原意与“共同产生效果的因素/量”相关,后来在数学语境中固定为“乘在变量前、决定其影响的数”。

相关词 Related Words

文学作品 Literary Works

  • Principia Mathematica(艾萨克牛顿):涉及力学推导与比例关系时常使用“coefficient”类概念与表述。
  • On the Origin of Species(查尔斯达尔文):在讨论变异、比例与统计性描述的学术语境中可见该词的使用。
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