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Example of population pyramid showing two variables Use a population pyramid to show the distribution of comparable data sets and highlight differences in the profile of the data. Usually resident population aged 0 to 21 years Example of histrogram chart showing one variable Use small gaps between the bars to emphasise the profile of the data. Use a histogram to show a distribution of data. To enable comparisons across sub-categories Example of bar chart used to compare multiple part to whole To enable comparisons within sub-categories

Use bars to enable comparisons to be made across multiple part to whole charts. Example of bar chart where no categories are noticeably dominantĮxample of incorrect use of pie chart where no categories are dominant If no categories are dominant use a bar chart to illustrate your data. No religion and not stated categories removed Example of pie chart ranked by size of categoryĮxample of incorrect use of pie chart with categories removed Where appropriate categories can be combined to highlight a certain message but should never be removed. If the categories do not sum to a meaningful whole, do not use a pie chart. Segments of a pie chart must sum to 100%. Rank the categories in a pie chart and start the first segment at the 12 o’clock position. Pie charts should only be used when there are less than six categories, otherwise use a bar chart or, if appropriate, combine categories. Rank the most important or recent data if there are multiple series and the other data sets should be ordered correspondingly.īar charts and pie charts should be used to show part to whole relationships. Example of slope chart showing change in ranking order Use a slope chart to highlight a change in rank. Example of chart ranking the top 10 in descending order If you are talking about data in terms of first, second or third, or “the top 10”, they should always be in descending order. Example of chart with clear ranking order from lowest value To highlight the lowest values the smallest value should be at the top of the chart. Example of chart with a clear ranking order from highest value To highlight the highest values the largest value should be at the top of the chart. Horizontal bars should be used.Ī bar chart should always be ranked by value, unless there is a natural order to the data (for example, age or time). Use bar charts to show data that are ranked, in either ascending or descending order.