The document discusses overcoming cognitive biases and making data-driven decisions. It addresses topics like system 1 thinking, evaluating data distributions, alternatives to pie charts, the serial position effect, data visualization giving confidence without effort, bewareing the streetlight effect, and using data expression, interactivity, search, and animation to uncover hidden truths in data and learn relationships. The presentation encourages thinking with data to make better decisions.

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Thinking in Data
Overcome cognitive biases and make data
driven decisions
Ben Garvey | Senior Engineer, RJMetrics

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You have a super power

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System 1

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Pick out the largest and the smallest

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What does the distribution look like?

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How about from this distance?

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Pie Charts

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Pie ChartsWhy Are
Evil

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Pick out the largest and the smallest

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Alternatives
Stacked Bars
Treemaps Stephen Few’s
Save the Pies for Dessert

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This is not the last mile
of your data pipeline

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This is the last mile
of your data pipeline

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Your Nemesis
The Serial Position Effect

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Hermann Ebbinghaus

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Ego depletion is real

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Data visualization gives you
confidence in state and trend
without effort

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Metrics can’t do everything

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Beware the
streetlight effect

26. Data Expression
Explore data to uncover hidden truths
and learn the rules of the game

27. Interactivity

28. Search
Mandel Bulldog Budget
Zoomable Treemap

29. Lineage: Genealogical expression engine
network graph
Animation

30. Animation Higher dimensionality,
complex relationships
Search Scalable for huge data sets
Interactivity One dataset, more perspectives
Data Expression

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@bengarvey
Thanks