Comparability

43 posts
Measles babies

Mona Chalabi has made this remarkable graphic to illustrate the effect of the anti-vaccine movement on measles cases in the U.S.: As a form of agitprop, the graphic seizes upon the fear engendered by the defacing red rash of the disease. And it's very effective in articulating its social message. *** I wasn't able to find the data except for a specific year or two. So, this post is more...

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Seeking simplicity in complex data: Bloomberg’s dataviz on UK gender pay gap

Bloomberg featured a thought-provoking dataviz that illustrates the pay gap by gender in the U.K. The dataset underlying this effort is complex, and the designers did a good job simplifying the data for ease of comprehension. U.K. companies are required to submit data on salaries and bonuses by gender, and by pay quartiles. The dataset is incomplete, since some companies are slow to report, and the analyst decided not to...

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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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Visualizing the 80/20 rule, with the bar-density plot

Through Twitter, Danny H. submitted the following chart that shows a tiny 0.3 percent of Youtube creators generate almost 40 percent of all viewing on the platform. He asks for ideas about how to present lop-sided data that follow the "80/20" rule. In the classic 80/20 rule, 20 percent of the units account for 80 percent of the data. The percentages vary, so long as the first number is small...

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Labels, scales, controls, aggregation all in play

JB @barclaysdevries sent me the following BBC production over Twitter. He was not amused. This chart pushes a number of my hot buttons. First, I like to assume that readers don't need to be taught that 2007 and 2018 are examples of "Year". Second, starting an area chart away from zero is equally as bad as starting a bar chart not at zero! The area is distorted and does not...

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The French takes back cinema but can you see it?

I like independent cinema, and here are three French films that come to mind as I write this post: Delicatessen, The Class (Entre les murs), and 8 Women (8 femmes).  The French people are taking back cinema. Even though they purchased more tickets to U.S. movies than French movies, the gap has been narrowing in the last two decades. How do I know? It's the subject of this infographic:  How do I...

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The French takes back cinema but can you see it?

Kaiser Fung (JunkCharts, Principal Analytics Prep) finds a visual design that highlights the insights from data comparing ticket sales of U.S. movies versus French movies in France.

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No Latin honors for graphic design

Kaiser Fung (Junkcharts, Principal Analytics Prep) explores the big shortcoming of pictograms, that they require readers to be bean-counters. The example comes from grade inflation data in the Ivy League.

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No Latin honors for graphic design

This chart appeared on a recent issue of Princeton Alumni Weekly. If you read the sister blog, you'll be aware that at most universities in the United States, every student is above average! At Princeton,  47% of the graduating class earned "Latin" honors. The median student just missed graduating with honors so the honors graduate is just above average! The 47% number is actually lower than at some other peer...

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Finding simple ways to explain complicated data and concepts, using some Pew data

A reader submitted the following chart from Pew Research for discussion. The reader complained that this chart was difficult to comprehend. What are some of the reasons? The use of color is superfluous. Each line is a "cohort" of people being tracked over time. Each cohort is given its own color or hue. But the color or hue does not signify much. The dotted lines. This design element requires a...

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