Pie charts don’t get much respect. They’re almost always considered the wrong choice by those supposedly in the know. But how do we know that this is true? What evidence do we have to support this? The truth is, not much. And when we start digging for proof, it turns out that pie charts are much better than we want to admit. [Read more…] about In Defense of Pie Charts
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User studies are an important part of visualization, but they also require a considerable amount of effort and time. In a paper presented at the BELIV workshop (part of CHI 2010), we discussed our experiences with running a number of visualization studies using Amazon’s Mechanical Turk (MTurk) service. Using MTurk, we are able to run large studies in much less time than usual, and at very low cost. We also show how to avoid gaming the system, which had been reported in earlier work using MTurk.
[Read more…] about Do Mechanical Turks Dream of Square Pie Charts?
Pie charts are perhaps the most ubiquitous chart type; they can be found in newspapers, business reports, and many other places. But few people actually understand the function of the pie chart and how to use it properly. In addition to issues stemming from using too many categories, the biggest problem is getting the basic premise: that the pie slices sum up to a meaningful whole.
[Read more…] about Understanding Pie Charts
So turns out Ben Shneiderman is into pies! Actual pies that is, but in the form of charts. Rather than, you know, the other way around. Feast your eyes on delicious-looking chart pies!
[Read more…] about Ben Shneiderman’s Chart Pies
Engaging viewers with interesting depictions of data always bears the risk of creating misleading or unreadable graphics. The square pie chart (or waffle chart) strikes a good balance between being interesting and not distorting the data. Here is an argument for the power of the pie and against the boredom of the bar.
[Read more…] about Engaging Readers with Square Pie/Waffle Charts
Below are links and a few additional resources for the examples I used in my talk, This Should Have Been A Bar Chart!, at Outlier 2022.[Read more…] about Links for “This Should Have Been A Bar Chart!” (Outlier 2022 Talk)
How do you make people not just see numbers when looking at a chart, but feel something? This chart of the number of deaths during the Iraq war has always given me a visceral response like no other, and it’s still as powerful as when it was made almost ten years ago. So I made a chart appreciation video to explain what I think is so great about it.[Read more…] about New video: Chart Appreciation, Iraq’s Bloody Toll by Simon Scarr
Dots fly across the screen, some of them moving up, some down. They represent black and white boys, and how their income differs from that of their parents and from each other. It’s a great way to show this data in an engaging way and without having to explain percentiles. This is a chart appreciation.[Read more…] about New video: Chart Appreciation, Black vs. White Boys and The Punishing Reach of Racism
Line charts – they’re not the most glamorous. And yet, they can be used to tell a compelling story about global warming. In this video, I talk about what I consider a modern classic of data journalism, What’s Really Warming the World by Eric Roston and Blacki Migliozzi: how it works, how it’s structured, and why it works so well.[Read more…] about eagereyesTV: Chart Appreciation, What’s Really Warming the World