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Population projection

Current rating 3/5 Impact: 3Accuracy: 33 votes
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Population projection
This is a very rich infographic that combines several visualisation types: bubble chart, population pyramid, comparative line charts, a map, pie charts and it is additionally fully annotated. The picture itself is crossed by a line (without reference axis) that communicates the main message of the infographic: the rapid population growth experienced by the UK in recent decades. The supplementary charts display information about population proportions, population densities, age and gender structure, comparison between migration related and “natural” population change, fertility rates during the last 35 years and lastly population changes by government region during 2007-08. The display is very rich and is successful at grabbing’s the reader’s attention by offering an appealing combination of related data.
Level of expertise
The Times Online: The Times Online, 10th November 2009. (News)
Interactive features
Benefits & pitfalls to avoid
  • Pie charts are often criticised. Comparing the size of pie segments can be difficult, and many visualisation experts suggest that bar-charts should be used instead.
  • Line-charts imply that data is continuously changing. If your data is discrete you might consider a bar-chart instead.
  • Using area or volume to represent data can distort data values, and exaggerate differences between values. For example, if the radius of the circle is used to represent data values, the area of the circle will quadruple if the data values double. There is also an issue of 'perceptual scaling' - the tendency of people to underestimate areas.
Create your own
  • Bubble charts can be created in a range of standard data applications such as Excel.
  • Some combination charts, such as bar and line charts, can be created in standard applications such as Excel (using more than one axis). Others can be combined by saving visualisations as image files and combining in an image editor.
  • Pie charts can be created in a range of standard data applications such as Excel.
  • A population pyramid is a type of bar-chart, and can be created in a range of standard data applications such as Excel.