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The significance of experimental results is often assessed using P values and estimates of effect size. However, the interpretation of these assessment tools can be invalidated by selection bias when ...

This example illustrates how to use PROC MULTTEST to multiplicity-adjust a collection of raw p-values obtained from some other source. This is a valuable option for those cases where PROC MULTTEST ...

In statistical practice P-values are regularly used to express the amount of evidence in the data, but there is no agreement on how to compute two-sided P-values when the sampling distributions are ...