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Pearson or Product-moment correlation

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Could you explain the Pearson or product-moment correlation? If we were to use a partial correlation, would you want to look at the relationship between two variables while removing the effect of one or two other variables?

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Solution Summary

A look at the relationship between the Pearson coefficient and the product-moment correlation.

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Pearson correlation: in simple terms, the Pearson correlation is a measure to show is variables are related to each other. The Pearson correlation varies from -1 to +1, where -1 (see figure 1) means that the two variables are perfectly negatively correlated with each other. A +1 means that the two variables are perfectly positively correlated with each ...

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