Max Rady College of Medicine

Term: Significance Testing

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Glossary Definition

Last Updated: 2014-06-18

Definition:

Tests of significance are used to determine whether the outcome of a study would lead to a rejection of the null hypothesis based on a low probability (usually 5% or less) threshold called p-values . Results are statistically significant when the probability that an observed effect would have occurred by chance is very small (usually 5% or less).

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