Mathematics 0580 · IGCSE · Cumulative frequency diagrams

Cumulative frequency diagrams — practice question

The cumulative frequency diagram gives data on the trunk diameter, in metres, for 120 trees.

(a)[2]

Find the inter-quartile range from the data.

(b)[2]

Find the 95th percentile value.

(c)[2]

Find the number of trees whose trunk diameter is greater than 3 metres.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$1.5$” …