The Avengers need your help to display this data successfully, and also calculate some averages etc. This builds up from low ability to high ability in stages, but is designed to be 'dipped into' where you need to. It covers from bar charts, through scatter graphs and frequency polygons, up to histograms and contains the calculations that go with each. The teachers' notes are just as a guide and don&'t need to be adhered to, but I have tried to guess the kinds of calculations that students might perform. Transparency of the title pages sorted!