(i)[4]
Draw a back-to-back stem-and-leaf diagram to show this information, putting the Dolphins on the left-hand side of the diagram and the Sharks on the right-hand side.
(ii)[3]
Find the median and interquartile range for the Dolphins.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
Shown below are the weights, in kg, of the 11 members of the Dolphins swimming team and the 11 members of the Sharks swimming team.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A correct back-to-back stem-and-leaf diagram with Dolphins on the LHS” …
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