Statisticians issue warning over misuse of P values
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Misuse of the P value — a common test for judging the strength of scientific evidence — is contributing to the number of research findings that cannot be reproduced, the American Statistical Association (ASA) warns in a statement released today. The group has taken the unusual step of issuing principles to guide use of the P value, which it says cannot determine whether a hypothesis is true or whether results are important.

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http://www.amstat.org/newsroom/pressreleases/P-ValueStatement.pdf
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