(a)[2]
Use the diagram to obtain an estimate of the $20$th percentile.
(b)[2]
Use the diagram to determine how many people had a temperature between $36.8^\circ\text{C}$ and $37.0^\circ\text{C}$.
Mathematics 4024 · O Level · Cumulative frequency diagrams
Cumulative frequency diagrams — practice question
The temperatures, in $^\circ\text{C}$, of $120$ people were recorded. The findings are shown on the cumulative frequency diagram.