When scatterplots are better than bar charts, and why?

Screenshot from Cleveland and McGill 1985

From time to time, you might hear that graphical method A is better at representing problem X than method B. While in case of problem Z, the method B is much better than A, but C is also a possibility. Did you ever ask yourselves (or the people who tell you that) “Says WHO?”

The guidelines like these come from theoretical and empirical studies. One such an example is a 1985 paper “Graphical perception and graphical methods for analyzing scientific data.” by Cleveland and McGill. I got the link to this paper from Varun Raj of https://varunrajweb.wordpress.com/.

It looks like a very interesting and relevant paper, despite the fact that it has been it was published 22 years go. I will certainly read it. Following is the reading list that I compiled for my data visualization students more than two years ago. Unfortunately, they didn’t want to read any of these papers. Maybe some of the readers of this blog will …

 

By Boris Gorelik

Machine learning, data science and visualization http://gorelik.net.

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