Summary (Grade 12 NSC Matric Mathematics): Flashcards

Fitting mathematical functions to sets of data points

Straight line representing overall pattern of data

Predicting values within the range of available data

Predicting values beyond the range of available data

$\hat{y} = a + bx$

Predicted value of $y$

$a = \bar{y} - b\bar{x}$

Strength and direction of linear relationship

$r \in [-1, 1]$ (between -1 and 1)

Perfect positive correlation