Interpreting and Predicting From a Linear Model (VCE SSCE General Mathematics): Flashcards

$y = a + bx$

Average change in $y$ for each one-unit change in $x$

Expected value of $y$ when $x$ equals zero

Making predictions within the range of original data

Making predictions outside the range of original data

Generally reliable

Generally unreliable

IN-terpolation = IN the data range = reliable

EX-trapolation = EX-ternal to data range = unreliable

Linear relationship may not continue outside data range