Grouped Data and Histograms (HSC SSCE Mathematics Advanced): Flashcards

Ranges of equal width organizing individual values

Midpoint of an interval

Running total of frequencies

Join with no gaps between them

Line graph drawn alongside or instead of histogram

Cumulative frequency polygon (pronounced 'oh-jive')

At zero (bottom left corner)

$\bar{x} = \frac{\sum xf}{n}$

$s^2 = \frac{\sum x^2f}{n} - \bar{x}^2$

$s = \sqrt{s^2}$