line chart

31 posts
This Wimbledon beauty will be ageless

This Financial Times chart paints the picture of the emerging trend in Wimbledon men’s tennis: the average age of players has been rising, and hits 30 years old for the first time ever in 2019. The chart works brilliantly. Let's look at the design decisions that contributed to its success. The chart contains a good amount of data and the presentation is carefully layered, with the layers nicely tied to...

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Visualizing Historical Political Party Identification in the Era of Trump

As many have noted, President Trump has shown a remarkable ability to maintain a strong base of support — about 40% of the voters — despite the myriad controversies swirling around him. Some clues about that base can be seen in the results of a fascinating survey taken recently by Pew Research Center to gauge Americans’ reaction to the Mueller investigation. Deep in the white paper released by Pew are historical numbers...

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SCMP’s fantastic infographic on Hong Kong protests

In the past month, there have been several large-scale protests in Hong Kong. The largest one featured up to two million residents taking to the streets on June 16 to oppose an extradition act that was working its way through the legislature. If the count was accurate, about 25 percent of the city’s population joined in the protest. Another large demonstration occurred on July 1, the anniversary of Hong Kong’s...

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A chart makes an appearance in my new video

Been experimenting with short videos recently. My latest is a short explainer on why some parents are willing to spend over a million dollars to open back doors to college admissions. I even inserted a chart showing some statistics. Click here to see the video.   Also, subscribe to my channel to see future episodes of Inside the Black Box. *** Here are a couple of recent posts related to...

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Clarifying comparisons in censored cohort data: UK housing affordability

If you're pondering over the following chart for five minutes or more, don't be ashamed. I took longer than that. The chart accompanied a Financial Times article about inter-generational fairness in the U.K. To cut to the chase, a recently released study found that younger generations are spending substantially higher proportions of their incomes to pay for housing costs. The FT article is here (behind paywall). FT actually slightly modified...

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Clarifying comparisons in censored cohort data: UK housing affordability

If you're pondering over the following chart for five minutes or more, don't be ashamed. I took longer than that. The chart accompanied a Financial Times article about inter-generational fairness in the U.K. To cut to the chase, a recently released study found that younger generations are spending substantially higher proportions of their incomes to pay for housing costs. The FT article is here (behind paywall). FT actually slightly modified...

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Visually exploring the relationship between college applicants and enrollment

In a previous post, we learned that top U.S. colleges have become even more selective over the last 15 years, driven by a doubling of the number of applicants while class sizes have nudged up by just 10 to 20 percent.  The top 25 most selective colleges are included in the first group. Between 2002 and 2017, their average rate of admission dropped from about 20% to about 10%, almost...

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An exercise in decluttering

My friend Xan found the following chart by Pew hard to understand. Why is the chart so taxing to look at?  It's packing too much. I first notice the shaded areas. Shading usually signifies "look here". On this chart, the shading is highlighting the least important part of the data. Since the top line shows applicants and the bottom line admitted students, the shaded gap displays the rejections. The numbers...

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Nice example of visual story-telling in the FT

I came across this older chart in the Financial Times, which is a place to find some nice graphics: The key to success here is having a good story to tell. Blackpool is an outlier when it comes to improvement in life expectancy since 1993. Its average life expectancy has improved, but the magnitude of improvement lags other areas by quite a margin. The design then illustrates this story in...

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Five steps to let the young ones shine

Knife stabbings are in the news in the U.K. and the Economist has a quartet of charts to illustrate what's going on. I'm going to focus on the chart on the bottom right. This shows the trend in hospital admissions due to stabbings in England from 2000 to 2018. The three lines show all ages, and two specific age groups: under 16 and 16-18. The first edit I made was...

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