Category: data visualization

Spurious Extrapolations: What if U.S. college tuition costs keep rising?

For this post, I’m going to test run a new post series called Spurious Extrapolations, where I extrapolate time series far beyond reason and envision what would happen if the trend continued. Let me know what you think of the

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The correct way to use pie charts

Pie charts are the most widely berated chart in data visualization. Many articles have been written over the years describing why pie charts are bad, and why we should no longer use them. Even key members of the data visualization

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Why posts get removed from /r/DataIsBeautiful

I’ve been a moderator of /r/DataIsBeautiful — one of the largest online communities dedicated to data analysis and visualization — for the past 2 1/2 years. During that time, I’ve reviewed thousands of data visualizations created by amateurs and professionals

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What data visualization tools do /r/DataIsBeautiful OC creators use?

One of the most common questions that newcomers to data [science/visualization/analysis] ask is: “What tools should I use to create data visualizations?” While I always recommend learning design principles before tools, I thought I’d take a stab at answering that

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Major League Baseball home run leaders, 1871-2016

Earlier this week, a Reddit user shared a fascinating animated data visualization showing the MLB home run leaders from the past 200+ years. I found this visualization especially interesting because it was one of the few examples where I’ve seen

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Revisiting the vaccine visualizations

Last year, the vaccination debate was all the rage again. “Pro-vaxxers” were loudly proclaiming that everyone should get vaccinated and discussing the science behind it, and “anti-vaxxers” were casting their doubts and still refusing to get vaccinated for personal reasons.

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Analyzing MMA: The Ultimate Fighting Championship

For the past 7 years, I’ve been a fan of MMA, and especially the larger Ultimate Fighting Championship events that take place around the world. For the uninitiated, MMA fights pit two professional fighters against each other who often have

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Visualizing Indego bike share usage patterns in Philadelphia (Part 2)

A couple months ago, I made an initial foray into understanding the usage patterns of Indego, Philadelphia’s new bike share system. This month, I thought it’d be a fun exercise to revisit that data set to see if I could

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Small multiples vs. animated GIFs for showing changes in fertility rates over time

A couple weeks ago, Stephen Holzman shared an animated GIF on /r/DataIsBeautiful that caught my eye. The GIF showed the evolution of fertility rates of the U.S. and Japan between 1947 and 2010, which starts right in the middle of

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U.S. college majors: Median yearly earnings vs. gender ratio

Last year, I looked at the gender ratios across college majors and discovered an interesting-yet-spurious correlation: College majors with higher male:female ratios (i.e., with more men than women) tend to have students with higher estimated IQs. After much debate, the

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