Anderson Darling Minitab. Lets compare the ability of each of these normality tests to detect non-normal data under three different scenarios. For example you can use the Anderson-Darling statistic to determine whether data meets the assumption of normality for a t-test.
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The Anderson-Darling AD statistic measures how well the data follow a particular distribution. If the observed difference is adequately large you will reject the null hypothesis of population normality. For example you can use the Anderson-Darling statistic to determine whether data meets the assumption of normality for a t-test.
The p-value is a probability that measures the evidence against the null hypothesis.
Minitab Statistical Software offers three tests for Normality. Box 24346 USA 2Department of Mathematics and Statistics Simon. Generally substantially smaller values for the Anderson-Darling statistic indicate that the data follow a distribution more closely. Whats a Normality Test aka Anderson-Darling Test for Normality.
