A bar chart titled ‘Number of children in families’.  The vertical axis is labelled frequency. The scale is marked in equal intervals from 0 to 9. The horizontal axis is labelled number of children and shows bars for 0, 1, 2, 3, 4 and 5 children.

When you click on the chart, the bar for each number of children is highlighted in turn. There is no bar for 4 children.