Annual rainfall in Samaru
Drag the red vertical line to highlight the crosses to the left on the jittered dot plot. The number of lower values is displayed both numerically and on the graph.
Explain that the height of the graph increases by 1 at each data value.
Choose Cumulative proportion from the pop-up menu and explain that the shape of the graph is the same whether the vertical axis is a count or proportion.
This is the same data as described in the first page of the section — annual rainfal in Samaru from 1928 to 1983.