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Alpha Risk
(redirected from type I error)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia 0.01 sec.
Alpha Risk
When testing a hypothesis, the risk of rejecting a piece of data that should have been accepted. Many tests reject some data as unusable or irrelevant. Alpha risk is the probability that the wrong data will be eliminated from the sample. It is also called type I error or alpha error. See also: Beta risk.


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A Type I error occurs when significance is falsely declared and a Type II error occurs when important differences are not detected.
The repercussions of making a Type I error or a Type II error differ greatly, however, for FDA drug reviewers.
0] is rejected only if the probability of a Type I error is [alpha] < 0.
 
 
 
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