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| Math Central | Quandaries & Queries |
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Question from anonymous, a student: What is the advantage of using an alpha level of .01 versus a level of .05, What is the disadvantage of using a smaller alpha level? |
An alpha level is the probability of making a Type I error (rejecting the null hypothesis when the null hypothesis is true) in statistics. The advantage of 0.01 alpha level over a 0.05 alpha level is there is less of a chance you made a Type I error. You usually are able to use an alpha level of 0.01 when you have a very large sample size or where a Type I error has very serious consequences.
Hope this helps,
Janice
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