What data visualization tools do you have experience using? Which one is your favorite to use and why?
This question is similar to the one about statistical software programs. It is attempting to discover your technical knowledge and familiarity with the tools the company you are interviewing with uses. Again, the best response is a direct one, stating your understanding of software tools, your preference, and the reason for your opinions.
"Data visualization tools I use include Google Charts, Tableau, Grafana, Chartist.js, FusionCharts, Datawrapper, Infogram, ChartBlocks, and D3.js. I prefer Tableau because it offers a variety of visualization styles, is easy to use, and can handle large data sets. I like Tableau because their help desk is very responsive and open to suggestions from the user community. It isn't a true open-source software, but the product is continuously being improved by the developers and the company's customers."
