GCSE Geography · key term

Frequency density

Definition

Frequency divided by class width; the height of a histogram bar when the vertical axis shows frequency density.

Used by Eduqas

Component 1, Component 2, Component 3

Where the axis shows frequency density, recover a frequency by multiplying bar width by height.
Revise: Statistical Measures, Percentage Change and Distributions

Specification 2.2 · Component 1, Component 2, Component 3

1
For unequal class widths, compare bar areas, not heights: frequency = class width × frequency density.

Create a free account to keep every note you open and track your progress.

frequency density = frequency \div class width

Using frequency density also works and makes the area calculation consistent across classes.