significance level

noun

A measure of how likely it is to draw a false conclusion in a statistical test, when the results are really just random variations.

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Meanings

nounsignificance level (plural significance levels)

plural significance levels

  1. mathematicsA measure of how likely it is to draw a false conclusion in a statistical test, when the results are really just random variations.
  2. mathematicsThe probability, usually expressed as a percentage, of making a decision to reject the null hypothesis when the null hypothesis is actually true; the probability of making a type I error.
  3. Used other than figuratively or idiomatically: see significance, level.
Cite this entry
APA

significance level. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/significance%20level

MLA

“significance level.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/significance%20level. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “significance level,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/significance%20level.

Source: significance level on Wiktionary, CC BY-SA 4.0.