Stem-and-leaf diagrams
 

Stem-and-leaf diagrams problem 9


The times taken, in seconds, by 15 members of each of two swimming clubs, the Penguins and the Dolphins, to swim 50 metres are shown in the following table.




Draw a back-to-back stem-and-leaf diagram to represent this information, with Penguins on the left-hand side.


 

main author and content editor: OpenProf website