Line of Best Fit (HSC SSCE Mathematics Standard): Flashcards

Straight line approximating linear relationship in scatterplot

Process of finding the line of best fit

Prediction within existing data range (more reliable)

Prediction outside existing data range (use cautiously)

Vertical distance from a data point to the line

Sum of all squared residuals

$m = r \times \frac{s_y}{s_x}$

$c = \bar{y} - m\bar{x}$

$(\bar{x}, \bar{y})$ - the centre of the data

Strength, direction, and type