Graph
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Use when you want to present data to
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Bar chart
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show frequency of occurrence and emphasise highest and lowest categories for one variable (frequencies are normally displayed vertically and categories horizontally)
show the trend for one variable over time (frequencies are normally displayed vertically and discrete time periods horizontally)
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Pie chart
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emphasise proportions in each category for one variable
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Multiple bar chart
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compare frequency of occurrence for two or more variables, emphasising highest and lowest categories (frequencies are normally displayed vertically and categories
horizontally)
compare the trends for two or more variables over time (frequencies are normally displayed vertically and discrete time periods horizontally)
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Pictogram
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emphasise highest and lowest categories for one variable
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Stacked bar chart
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compare frequency of occurrence for two or more variables, emphasising the variables’ totals (frequencies are normally displayed vertically and categories horizontally)
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Percentage component bar chart
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compare proportions in each variable category for two or more variables (proportions are normally displayed vertically and categories horizontally)
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Comparative pie chart
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compare proportions in each variable category for two or more variables
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