construct and interpret graphical displays of data, and describe the distributions of the variables involved and interpret in the context of the data
U1.AoS1.7
construct and use parallel boxplots or back-to-back stem plots (as appropriate) to compare the distribution of a numerical variable across two or more groups in terms of centre (median), spread (range and IQR) and outliers, interpreting any observed differences in the context of the data
