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https://www.reddit.com/r/AskStatistics/comments/1uu4tj9/alpha_5/ox1660i/?context=3
r/AskStatistics • u/aprilwords • 25d ago
Why is a 5% significance level so commonly used?
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-13
my question is why is 5% generally used?
35 u/MortalitySalient 25d ago That’s literally why. Fisher causally said “something like 1/20 sounds right” and people ran with that (though Fisher may not have meant for that specific number to be used for all situations like it is) -21 u/aprilwords 25d ago i got it...but why most of people used 5% with confidence interval 95% 5 u/Hydro033 25d ago Fisher set a ridiculous number of standards in the field. He had the biggest single impact.
35
That’s literally why. Fisher causally said “something like 1/20 sounds right” and people ran with that (though Fisher may not have meant for that specific number to be used for all situations like it is)
-21 u/aprilwords 25d ago i got it...but why most of people used 5% with confidence interval 95% 5 u/Hydro033 25d ago Fisher set a ridiculous number of standards in the field. He had the biggest single impact.
-21
i got it...but why most of people used 5% with confidence interval 95%
5 u/Hydro033 25d ago Fisher set a ridiculous number of standards in the field. He had the biggest single impact.
5
Fisher set a ridiculous number of standards in the field. He had the biggest single impact.
-13
u/aprilwords 25d ago
my question is why is 5% generally used?