When I teach data visualization classes and workshops, I present the wide array of graphs, charts, and diagrams that are available to us when we communicate our data. I argue that these “non-standard” graph types can help us be more…
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One of the encouraging trends in the data visualization space right now is the focus on accessibility. While the data visualization field has for too long focused solely on visual impairments—primarily red-green color vision deficiency or “color blindness”—there is more…
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A conversation that often pops up in visualizing data is what to do about outliers. How should we handle data values that are so much larger (or smaller) than the rest of the values in our data? In this post,…
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You’ve seen plenty of them, I’m sure. A line chart with two or more lines with two vertical axes. You read the title, the legend, the axis labels, and start contemplating the patterns. Suddenly, you realize that the metrics of…
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With school upon us once again–mostly in person this time!–I thought this would be a good opportunity to offer FREE sets of my Match It Data Visualization card game to educators. I’ve used the game myself to teach 4th, 5th,…
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Robert (Bob) Haveman passed away last week surrounded by his family in Madison, Wisconsin. Bob played a key part in my life and was a great mentor, teacher, and friend. I met Bob in my last semester of college at…
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The horrific school shooting in Uvalde, Texas two weeks ago that took the lives of 19 children and two teachers has, once again, brought to the foreground the policymaking stalement to address the causes of mass shootings. At this point,…
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With more than 200 guests and eight seasons of episodes, the PolicyViz Podcast is one of the longest-running data visualization podcasts around. You can support the show by downloading and listening, following the work of my guests, and sharing the…
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When journalist Nick Faris wrote last year that if Alexander Ovechkin catches Wayne Gretzy’s lifetime goal-scoring record, it could be credited to his “massive edge in OT goals,” I knew it was a bad take. First off, Ovi’s 24 goals…
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Comparing individual athletes across eras is basically impossible (except for Tom Brady, of course). There are changes in rules and equipment, strategy, player training and nutrition, and more that makes comparing one player’s performance 50 years ago to another player’s…
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