significance level

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significance level (plural significance levels)

  1. (statistics) A measure of how likely it is to draw a false conclusion in a statistical test, when the results are really just random variations.
  2. (statistics) The 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 with a figurative or idiomatic meaning: see significance,‎ level.


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