V2EX omitted variable

Omitted Variable

释义 Definition

“遗漏变量;被省略的变量”。在统计/计量模型中,本应纳入但未纳入的影响因素(自变量)。遗漏变量常会导致估计结果出现偏误(尤其在回归分析中)。

发音 Pronunciation (IPA)

/mtd vribl/

例句 Examples

The model may be inaccurate because of an omitted variable.
这个模型可能因为遗漏变量而不准确。

If income is an omitted variable correlated with both education and health, the estimated effect of education on health can be biased.
如果收入是一个与教育和健康都相关的遗漏变量,那么对“教育影响健康”的估计效应可能会产生偏误。

词源 Etymology

omitted 来自动词 omit(“省略、遗漏”),源自拉丁语 omittere(放过、略去);variable 来自拉丁语 variabilis(可变化的)。合起来指“被略去的可变因素”,常用于统计、计量经济学等语境。

相关词 Related Words

文学与经典作品 Literary Works

  • Introductory Econometrics: A Modern Approach(Jeffrey M. Wooldridge)中常用“omitted variable(s)”讨论回归设定与偏误来源。
  • Mostly Harmless Econometrics(Joshua D. Angrist & Jrn-Steffen Pischke)在因果推断语境中多次提及遗漏变量问题。
  • Econometric Analysis(William H. Greene)在模型设定与内生性章节中讨论遗漏变量及其影响。
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