The sample correlation coefficient is the ratio of explained variation to total variation.

Name: The sample correlation coefficient is the ratio of explained variation to total variation.
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The sample correlation coefficient measures the strength and direction of the linear relationship between two variables. It is calculated as the ratio of the covariance between the two variables to the product of their standard deviations. It is not the ratio of explained variation to total variation.

The Sample Correlation Coefficient Is the Ratio of Explained Variation