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Question
How to find Pearson’s correlation for a population? For a sample?
Answer
Using \(\sum {xy} \over {\sqrt {\sum x^2 \times \sum y^2}}\) for a population and \(r={1\over n-1} \times \sum ({(x_i -\hat{x})\over s_x}\times{(y_i -\hat{y})\over s_y})\) for a sample

Question
How to find Pearson’s correlation for a population? For a sample?
Answer
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Question
How to find Pearson’s correlation for a population? For a sample?
Answer
Using \(\sum {xy} \over {\sqrt {\sum x^2 \times \sum y^2}}\) for a population and \(r={1\over n-1} \times \sum ({(x_i -\hat{x})\over s_x}\times{(y_i -\hat{y})\over s_y})\) for a sample
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pdf

owner: naxplast06 - (no access) - Deviant S. - The Practically Cheating Statistics Handbook (2010, CreateSpace Independent Publishing Platform).pdf, p148

Summary

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