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Students complete a stem and leaf graph about students' test scores and answer questions on mode, spread and range.

Students redraw, and re-order, the numbers in a back-to-back stem-and-leaf graph and then answer questions about the new graph.

Students construct a back-to-back stem-and-leaf graph for heights of trees. They then answer a question on range and make a statement comparing the heights of akeake and kōhūhū.

This practical task requires students to record data, which is read out to them, on a back-to-back stem-and-leaf graph. The leaves are then ordered into a second graph and the graph interpreted.