bar chart embellishments
TRANSCRIPT
Exploring Chart Perception
An Evaluation of the Impactof Visual Embellishments in Bar Charts
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Drew Skau Lane Harrison Robert Kosara@SeeingStructure @laneharrison @eagereyes
Slides: https://goo.gl/BxhHRV
Infographics
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Infographics
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Bar Chart Embellishments
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Bars with caps on the ends
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Bars that overlap their neighbors
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Bars with quadratic area changes
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Bars with rounded ends
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Triangular bars
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Bars that extend below the zero line
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Baseline Chart
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Study Questions
Absolute Judgement:In the chart below, what is the value of A?
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78
Study Questions
Relative Comparison:In the chart below, what percentage is B of A?
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12.5%
Hypotheses
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Embellishment
Overlapping
Quadratic
Capped
Triangle
Extended
Rounded
AbsoluteJudgement
RelativeComparison
Absolute Judgement Results
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Relative Comparison Results
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Results
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Embellishment
Overlapping
Quadratic
Capped
Triangle
Extended
Rounded
AbsoluteJudgement
RelativeComparison
Not Statistically Significant
Statistically Significant
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Why did capped perform equally well and with lower variance for absolute comparisons?
Overshoot in Fonts
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Compromise
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vs.
Disinformation Visualizations
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http://fellinlovewithdata.com/research/deceptive-visualizations
http://visualisingadvocacy.org/blog/disinformation-visualization-how-lie-datavis
Recommendations
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Recommendations
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Definitely:
Recommendations
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Cautiously:
Questions
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Drew Skau Lane Harrison Robert Kosara@SeeingStructure @laneharrison @eagereyes
Paper:http://goo.gl/Hnr3MR
Slides:https://goo.gl/BxhHRV
Code:http://github.com/dwskau/bar-chart-embellishment