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Try to identify who might be interested in each graph. Then put yourself in their shoes and imagine how they might want to use the data.
This problem follows on from Charting Success, so you could take a look at the solution to give you an idea of the sort of information that can be deduced from similar charts.
In a league of 5 football teams which play in a round robin tournament show that it is possible for all five teams to be league leaders.
Have you ever wondered how maps are made? Or perhaps who first thought of the idea of designing maps? We're here to answer these questions for you.
Florence Nightingale may be well known for her role as a nurse, but she was also an excellent mathematician, collecting and analysing data to help improve hospital conditions.