Fitting a Linear Model to the Data (VCE SSCE General Mathematics): Flashcards

Process of fitting a straight line to data

$y$-intercept

Slope

Visual method using ruler to draw line balancing data points

$b = \frac{y_2 - y_1}{x_2 - x_1}$

Vertical distance between data point and fitted line

When data point lies above the line

Sum of squared residuals

$b = r \frac{s_y}{s_x}$

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