Box and whisker plots
One of the graphs that is very much underused in internal assessment is the "box and whisker plot." They are also called "box plots." This graph is a very good way of showing not only the median values of two or more conditions but also giving the reader a sense of the distribution of the data and the presence of outliers. The box and whisker plot is now a part of all SL maths courses in the IB. Having students...