Analyzing relationships between variables and predicting outcomes
What is Pearson's correlation coefficient (r)?
A measure of the strength and direction of the linear relationship between two continuous variables.
Example: r = 0.85 indicates a strong positive linear relationship; r = −0.3 indicates a weak negative relationship
Note: Range: −1 to +1; r² = proportion of variance explained; assumes linearity, normality, and no outliers; an equivalent form uses (n−1)×sₓ×sᵧ in the denominator
