Bar charts and histograms (OCR GCSE Maths): Flashcards

Simplify data, show patterns, compare results clearly

Categorical data

Continuous data

Separated by gaps

Touching (to show continuity)

Frequency

Frequency density

$\frac{\text{Frequency}}{\text{Group Width}}$

Difference between upper and lower limits of interval

$\text{Frequency} = \text{Frequency Density} \times \text{Group Width}$

Area of each bar

Distribution and shape of data

Wider bars may not mean more data, just bigger range

Bar chart: gaps; Histogram: touching