data viz - telling stories with data
DESCRIPTION
OCSI's Tom Smith presentation to the iNetwork conference "Getting out the Facts: Open Data & Data Visualisation"TRANSCRIPT
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Data viz – telling stories with data
Tom Smith, OCSI
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Make an impact
Your data mustinfluence your
organisation & services
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Get your message across
Data visualisation is key way to communicate
stories from your data
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Information from data. Order from chaos
• “data graphics can do much more than … substitute for statistical tables…. [They] are instruments for reasoning about quantitative information”, Tufte, 1983
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How can data visualisation help local organisations?
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Summarise issues for service managers and senior staff
West Midlands Apprentices, Excel dashboard
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Engage the public with your information
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Causes of death for under 75s
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Engage the public (2)
• Contribution of different diseases to inequalities in life expectancy
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Communicate key messages to ... staff, commissioners, funders, volunteers ...
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Data visualisation principles
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Visualisation is communication
1. Design for your audience
2. Keep it accurate
3. Keep it clear
Good communication
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Principle 1: Design for your audience
• Key points for this visualisation for this audience– Limit what you show. Be selective
• Know your audience – What information does your audience want/ need?– What will they quickly understand?– What do they need to help them see the data story
• Test your visualisation - colleagues? managers?
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Design for your audience – evolution 1
Robert Radburn, Leicestershire. Changing how we present data to Community Safety Team Management meetings
Crime rates by ward for single
indicator. Targets.
Detailed.
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Design for your audience – evolution 2
Crime indicators for all
crimes, all wards. 3 years
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Design for your audience – evolution 3
Crime indicators for all
crimes, all wards. Trends
by colour
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Principles 2 & 3: Keep it accurate & clear
• Focus on the message(s) for the audience
• Show the data without distortion– Avoid common pitfalls (do’s and dont’s)
• Don’t obscure the information– Use the right type of chart
• Learn from others– Look at examples and resources – there’s lots out
there!
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Data visualisation practical
Do’s and Don’ts
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Simplify to emphasise key message(s)
OCSI analysis of Amaze UK cost-benefits
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Annotate to emphasise the story
Warwickshire Quality of Life 2011
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Additional visuals to strengthen the story
Metropolitan Police
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Show the whole truth (trends)
3 points is not a trend ...
Same dataset, longer time
series, different story
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Repeated elements for similar aspects
Warwickshire Quality of Life 2011
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Use the right chart
Hall of shame: “Criminal” pie-chartvia ONS Data Visualisation Centre
Shouldn’t pie charts add up to
100?%
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Just because you can, doesn’t mean you should
Hall of shame: Pictorial representation
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3D charts? No!
“3D charts are the first refuge of scoundrels”, Brian Derry, NHS-IC
Hall of shame: Excel 3D charts
via ONS Data Visualisation Centre
Hides the story
How much? When?
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Keep it simple
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Learn from others – lots of resources
• www.improving-visualisation.org.uk/links visualisation support for public sector researchers
• www.visualisingdata.com (lots of links, tutorials, tools)
• Flowing Data, www.flowingdata.com (examples)
• www.gapminder.org (Hans Rosling videos)
• ONS Data Viz centre www.ons.gov.uk/ons/interactive/index.html
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Learn from others – lots of resources
extremepresentation.typepad.com/blog/2006/09/choosing_a_good.html
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Summing up
• Your data must influence your organisation & services– Make an impact
• Data visualisation is key way to communicate stories from your data– Get your message across. Lots of uses in local organisations
• Principles - design for audience, keep it accurate & clear
• Practicals - do's & don'ts
• Learn from others - resources
• Have fun
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Tom SmithOxford Consultants for Social Inclusion (OCSI)
e: [email protected]: +44 1273 810 270w: www.ocsi.co.uk
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Data viz and photo credits
• Warwickshire Quality of Life 2011 report• Brighton & Hove Annual Director Public Health 2012 report• Leicestershire Research & Intelligence analysis and reports• OCSI analysis for Amaze UK disability charity• West Midlands Regional Observatory Apprentice Dashboard• Guardian Public Spending wallchart• David McCandless Map Venn diagram • ONS Data Visualisation Centre , visuals and hall of shame• DCLG / OCSI, Improving Visualisation for public sector
researchers• Chart Chooser• Flowing Data • Wikimedia Commons