Two types of graphs are appropriate for this type of data. In either case, you will need to plot one graph for each of your frequency datasets.

A **pie chart** shows the proportion of each category in the total observations. It is used to show proportionate data (eg percentages), using the angle of each slice to represent proportion. It is a convenient representation that most people find easy to 'read'.

A **bar chart** represents data in categories as a series of (usually vertical) bars, whose height corresponds to the value within that category. Bar charts may show either real values (ie the number of observations for a given category) or proportionate data.

In either case, the chart only works effectively for small numbers of categories (≤ 10).