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Section 7.12 Key Takeaways
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Always visualize relationships before interpreting numbers!!!
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Pearson correlations measure linear relationships between numeric variables.
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Correlation coefficient (r): Measures the strength and direction of a linear relationship.
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Coefficient of determination (R²): Proportion of variance in Y explained by X.
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Partial correlation: Correlation between two variables after controlling for another.
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Point-biserial correlation: Correlation between a continuous and dichotomous variable.
