4. Compare the equality of averages

Finally, we'll use a Grubbs test to test the hypothesis of equality of means. The Grubbs statistic tests the value furthest from the mean:

G = \frac{M a x (| X_{i} - \bar{X} |)}{\sqrt{\frac{1}{N - 1} \sum_{i = 1}^{N} {(X_{i} - \bar{X})}^{2}}}

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Compare the equality of averages

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