Mathematics 0580 · IGCSE · Cumulative frequency diagrams

Cumulative frequency diagrams — practice question

The cumulative frequency diagram gives the reaction times, measured in seconds, for 200 students.

(a)[1]

Find the median value.

(b)[2]

Find the interquartile range for the data.

(c)[2]

Find the number of students whose reaction time is more than 4 seconds.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Median $6$ is correct.” …