Mathematics 0580 · IGCSE · Averages and measures of spread

Averages and measures of spread — practice question

The table gives data on the times, $t$ seconds, that each of 100 students needed to solve a puzzle.
(a)[4]

Calculate an estimate for the mean time.

(b)[3]

Fill in the table.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Estimated mean: 27.625” …

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