Mathematics 4024 · O Level · Cumulative frequency diagrams
Cumulative frequency diagrams — practice question
Measurements were taken for 120 cereal packets, and the outcomes are shown in the cumulative frequency diagram.
(a(i))[1]
Use the diagram to estimate the median.
(a(ii))[2]
Use the diagram to estimate the interquartile range.
(b)[2]
The measuring scales were not accurate. Every recorded mass was $0.8\,$g above the true mass. State the median and the interquartile range of the actual masses.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Approximately $501$.” …