Let’s assume that a bad chart is a chart that breaks basic perceptual laws, contains too much fluff, do not respect data relationships and do not clearly answer the underlying question (if you can find one). Why do people make such charts? Below you can find some reasons. Check the ones you agree with. You … Read more
A new page is available in my tutorial “Data visualization for Excel Users”. It’s the first page of a mini series on how to make a chart and we’ll learn how to ask questions and what type of questions we should ask.
We stop loving someone or something when we feel there is nothing more to discover, when we have no more questions, when we don’t care about the answers. I started writing my Data Visualization for Excel Users series because I have an unhealthy number of open questions. I’d like to go beyond it depends but there … Read more
Data visualization is about finding and communicating patterns. But here is an often-forgotten truism: patterns are not some kind of ready-to-wear knowledge. You can look at a chart and have an epiphany and the person next to you can dismiss it as useless. Let’s see why. Is this person a friend of yours? If you … Read more
I refuse to believe that a moderately clever person makes a 3D chart to get better insights from the data. The real reasons behind this behavior have nothing to do with data visualization, and impression management is one of them. Maybe this can be confirmed by research on basic needs, like eating. Wired published this … Read more
Do you know that, according to Amazon, Tufte’s Envisioning Information is a best seller book in Design and Decorative Arts? This man fights all his life against decoration and one of his best books ends up on the Decorative Arts category? Life (or Amazon) does have a twisted sense of humor. Unless… Unless Amazon is plotting … Read more
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
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