sxx|What does SXX mean in statistics? ,高梨樹里

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SXX. SXX is one of the components computed in finding the correlation and regression. It is a measure of variability. It is also known as the sum of squares of the variable x. Key Vocabulary: Standard Deviation: The formula for standard deviation uses the sum of the squares of the deviations from the mean.

There are many different ways to look at degrees of freedom. I wanted to provide a rigorous answer that starts from a concrete definition of degrees of freedom for a statistical estimator as this may be useful/satisfying to some readers:

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