Mathematics 0580 · IGCSE · Averages and measures of spread

Averages and measures of spread — practice question

A grouped frequency table showing the times taken by 120 boys.
(a)[4]

Calculate an estimate of the mean time.

(b)[4]

Complete the histogram so that it shows the information in the frequency table.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correctly determines the midpoints $25,32.5,37.5,50,80$” …

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