Be able to recognise and work with categorical, discrete, continuous and ranked data. Be able to interpret standard diagrams for grouped and ungrouped single-variable data.
Includes knowing this vocabulary and deciding what data presentation methods are appropriate: bar chart, dot plot, histogram, vertical line chart, pie chart, stem-and-leaf diagram, box-and-whisker diagram (box plot), frequency chart.
Learners may be asked to add to diagrams in examinations in order to interpret data.
Notation:
- A frequency chart resembles a histogram with equal width bars but its vertical axis is frequency.
- A dot plot is similar to a bar chart but with stacks of dots in lines to represent frequency.
Excludes: Comparative pie charts with area proportional to frequency.