Correlation & Regression (AQA A-Level Mathematics): Quizzes

Product Moment Correlation Coefficient

$r = 1$

$0 < r < 0.5$

$r = 0$

$-0.5 < r < 0$

$r = -1$

Correlation does not imply causation

The mean point $(\bar{x}, \bar{y})$

When data appears linear and $r$ is strong

Cannot be sure relationship stays linear