Mathematics 9709 · AS & A Level · Representation of data
Representation of data — practice question
The times, measured in seconds, taken by 15 swimmers from each of two clubs, the Penguins and the Dolphins, to cover 50 metres are displayed in the table below.
(a)[4]
Use the information to draw a back-to-back stem-and-leaf diagram, placing Penguins on the left-hand side.
(b)[3]
On the same diagram, add a box-and-whisker plot for the Dolphins’ times.
(c)[1]
Hence, give one difference between the distributions of the times for the Penguins and the Dolphins.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct stem selected and labelled” …