Mathematics 0580 · IGCSE · Averages and measures of spread

Averages and measures of spread — practice question

Heights were measured for 200 people. The table summarises the outcomes. Height $h$ (cm): $100 < h \le 120$, $120 < h \le 130$, $130 < h \le 150$, $150 < h \le 190$. Frequency: $32, 55, 64, 49$.
(main)[4]

Calculate an estimate of the mean height.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Accurate use of the midpoints $110,125,140,170$” …

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