Strength of a Linear Relationship: The Correlation Coefficient (VCE SSCE General Mathematics): Flashcards

Numerical measure of how closely points cluster around a line

$r$

Between $-1$ and $+1$, inclusive

Perfect positive linear association, points on upward line

Perfect negative linear association, points on downward line

No linear association or pattern in the data

Direction of the linear association (positive or negative)

Strength of the linear relationship

$0.75 \leq r \leq 1$

Variables numeric, association linear, no outliers