Correlation Coefficient (Leaving Cert Mathematics): Flashcards

$r$

How close points lie to a straight line

Product Moment Correlation Coefficient

$r = 1$

$r$ close to $1$

$0 < r < 0.5$

$r = 0$

$-0.5 < r < 0$

$r$ close to $-1$

$r = -1$

No, correlation does not imply causation

Must be done in context