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Many statistical methods assume data or a model's residuals are normally distributed. Use this tag for questions about the assumption & testing of normality, or about normality as a *property*. Use [normal-distribution] for questions about the normal distribution per se.

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Theoretical reasoning for PCA effectiveness

The effectiveness of Principal component analysis in detecting process abnormalities requires that the process data to follow a Gaussian distribution This is what I read over a thread. Can anyone ex …
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