V2EX significance-level

Significance Level

定义 Definition

显著性水平:在假设检验中,研究者事先设定的“可接受的误报概率”(第一类错误率,记作 α),用于判断结果是否“统计显著”。常见取值为 0.050.01 等。

发音 Pronunciation (IPA)

/snfkns lvl/

例句 Examples

The significance level was set at 0.05.
显著性水平设定为 0.05。

Because multiple comparisons were made, the researchers lowered the significance level to control false positives.
由于进行了多重比较,研究者降低了显著性水平以控制假阳性。

词源 Etymology

significance 源自拉丁语 significare(“表示、意味着”),由 signum(“标记、符号”)+ facere(“做”)构成;在统计学语境中逐渐固定为“统计显著性”。level 表示“水平、层级”。合起来指“判定显著的阈值水平”,即检验中预先规定的 α。

相关词 Related Words

文学与著作中的用例 Literary & Notable Works

  • Ronald A. Fisher, Statistical Methods for Research Workers(《研究工作者的统计方法》)
  • Ronald A. Fisher, The Design of Experiments(《实验设计》)
  • Jerzy Neyman & Egon S. Pearson, “On the Problem of the Most Efficient Tests of Statistical Hypotheses”(关于最有效假设检验问题的系列论文)
  • George E. P. Box, J. S. Hunter & W. G. Hunter, Statistics for Experimenters(《实验者的统计学》)
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