Mathematics 9709 · AS & A Level · Representation of data

Representation of data — practice question

A record is kept of the times for 240 competitors in an event, accurate to the nearest minute. These results are set out in the table.

(a)[4]

Draw a histogram to show this information.

(b)[3]

Calculate an estimate for the mean time taken by the 240 competitors.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “4 or more correct frequency densities” …