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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).