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Blog post: swansont: One, Two, Five Sigma!

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Five sigma and all that

 

Another of Lyons’ themes in the article is to address the rather arbitrary “five sigma†(5?) significance traditionally required by particle physicists to claim a discovery of a new particle or some other new effect.

 

This is often presented just as physics requiring 5?, but Butterworth is a physicist and knowns that it's not true in all sub-disciplines.
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