stem and leaf

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S2 interpret and construct tables, charts and diagrams, including frequency tables, bar charts, pie charts and pictograms for categorical data, vertical line charts for ungrouped discrete numerical data, tables and line graphs for time series data and know their appropriate use

To include stem and leaf diagrams.

S4 interpret, analyse and compare the distributions of data sets from univariate empirical distributions through:

●  appropriate graphical representation involving discrete, continuous and grouped data including box plots

●  appropriate measures of central tendency (median, mean, mode and modal class) and spread (range, including consideration of outliers quartiles and interquartile range)