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Type II error



         









In statistical hypothesis testing, a Type II error consists of failing to reject an invalid null hypothesis (i.e. falsely accepting an invalid hypothesis).

The symbol for the probability of a Type II error is <math>\beta<math> (beta). The power of a statistical test is defined as <math>1 - \beta<math>. A test with high sensitivity will have fewer Type II errors.

See also Type I error.






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