Change Bad Charts in the Wikipedia

Corporate annual reports and the Wikipedia are two great resources to find really bad charts. We can’t do much about corporate reports, but we can actually change the Wikipedia articles. So, here is an assignment for you: find a bad chart and replace it with one that actually makes sense from a data visualization point … Read more

10,000 Steps for a Healthier (Data Visualization) Lifestyle

Get a cheap pedometer and a pair of comfortable walking shoes and walk 10,000 steps per day. It you don’t want to be an Olympic champion that’s all you need to improve your wellness and raise awareness towards a healthier lifestyle. If 10,000 seem too much don’t worry. Just keep the pedometer in your pocket … Read more

Too Many Tools, Too Much Grammar, Too Little Sense

If you want to improve your data visualization skills you should think of it as a foreign language, where you use data points instead of words, charts instead of sentences, dashboards instead of paragraphs, axis and labels instead of punctuation marks. It has its own grammar, created by Bertin and improved by Tufte, Few, Cleveland … Read more

Memorable Charts? Forget About It!

This too much discussed paper “found that people’s accuracy in describing the embellished charts was no worse than for plain charts, and that their recall after a two-to-three week gap was significantly better. In addition, participants preferred the embellished charts“. OK, let’s take a deep breath. Apparently, all things being equal, you should use a … Read more