Critical value may refer to:
In statistical hypothesis testing, a critical value is the value corresponding to a given significance level. This cutoff value determines the boundary between those samples resulting in a test statistic that leads to rejecting the null hypothesis and those that lead to a decision to not reject the null hypothesis. If the calculated value from the statistical test is less than the critical value, then you do not reject the null hypothesis. If the calculated statistic is outside of the critical value, you may reject the null hypothesis at the pre-specified level of significance. Usually this also entails not rejecting some alternative hypothesis.
- do Carmo, Manfredo Perdigão, Differential geometry of curves and surfaces, Prentice Hall, 1976.
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