Measure of correlation Pearson's Linear Correlation Coefficient The correlation denoted by r, measures the amount of linear association between two variables, strength and direction r is always between -1 and 1 inclusive ■[-1,1 a Population's Correlation Coefficient: p a Samples correlation Coefficient: r15 Measure of correlation ◼ Pearson’s Linear Correlation Coefficient, The correlation, denoted by r, measures the amount of linear association between two variables, strength and direction. ◼ r is always between -1 and 1 inclusive. ◼ [-1, 1]  Population’s Correlation Coefficient: ρ  Sample’s Correlation Coefficient: r