2a.04 Histograms with unequal class widths — Edexcel Statistics 1ST0

Calculate frequency density accurately and use it to draw histograms featuring unequal class widths.
Interpret and comparatively analyze data sets accurately displayed within unequal class width histograms.
Apply the standard formula for calculating frequency density.
Ensure correct labelling of the vertical frequency density axis or inclusion of an appropriate proportional key.
Understand how to apply a standard class width alongside appropriate units as an acceptable alternative representing frequency density.

Histograms with unequal class widths