Data (mis)visualization From Data to Insight Dr. etinkaya-Rundel - - PowerPoint PPT Presentation

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Data (mis)visualization From Data to Insight Dr. etinkaya-Rundel - - PowerPoint PPT Presentation

May 10, 2023 366 likes •621 views

Data (mis)visualization From Data to Insight Dr. etinkaya-Rundel July 5, 2016 What is wrong with this visualization? Source: http://gizmodo.com/8-horrible-data-visualizations-that-make-no-sense-1228022038 2 What is wrong with this

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Data (mis)visualization

From Data to Insight

  • Dr. Çetinkaya-Rundel

July 5, 2016

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What is wrong with this visualization?

Source: http://gizmodo.com/8-horrible-data-visualizations-that-make-no-sense-1228022038

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Source: World Happiness Report (2012) http://www.earth.columbia.edu/articles/view/2960

What is wrong with this visualization?

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Source: https://eagereyes.org/blog/2008/ny-times-the-best-and-worst-of-data-visualization

What is wrong with this visualization?

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Source: http://viz.wtf/

What is wrong with this visualization?

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Source: http://www.aul.org/new-leviathan/

What is wrong with this visualization?

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Redo

Source: http://www.politifact.com/truth-o-meter/statements/2015/oct/01/jason-chaffetz/chart-shown- planned-parenthood-hearing-misleading-/

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Redo further

Source: http://www.politifact.com/truth-o-meter/statements/2015/oct/01/jason-chaffetz/chart-shown- planned-parenthood-hearing-misleading-/

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One last look

Source: http://www.politifact.com/truth-o-meter/statements/2015/oct/01/jason-chaffetz/chart-shown- planned-parenthood-hearing-misleading-/

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Scale matters!

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Gallup Poll shows a minor increase in percentage of Americans without health insurance coverage.

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Percentage of Americans Without Health Insurance Coverage

Jan'08 Jan'09 Jan'10 14 15 16 17

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Percentage of Americans Without Health Insurance Coverage

Jan'08 Jan'09 Jan'10 14 15 16 17

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Percentage of Americans Without Health Insurance Coverage

Jan'08 Jan'09 Jan'10 14.0 14.5 15.0 15.5 16.0 16.5

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Percentage of Americans Without Health Insurance Coverage

Sep'08 Jan'09 Apr'09 14.0 14.5 15.0 15.5 16.0 16.5

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Gallup Poll shows a substantial increase in percentage of Americans without health insurance coverage.

Percentage of Americans Without Health Insurance Coverage

Sep'08 Jan'09 Apr'09 14.0 14.5 15.0 15.5 16.0 16.5

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How substantial is the increase?

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Does your visualization tell a story, or complicate a story?

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What story does this visualization tell?

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What story does this visualization tell?

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Use a visualization when you can

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Source: http://articles.latimes.com/2011/mar/18/health/la-he-birth-control-stats-20110316

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In summary…

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Tufte’s principles for graphical excellence

1.Above all else show the data. 2.Maximize the data-ink ratio. 3.Erase non-data ink. 4.Erase redundant data ink. 5.Revise and edit

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Source: Tufte, Edward R., and P. R. Graves-Morris. The visual display of quantitative information. Vol. 2.

  • No. 9. Cheshire, CT: Graphics press, 1983.