Right now I’m working on a project that involves new ways to view units of content and the relationships between them. I’ve posted the comic I worked on, it has a number of stats references throughout. This is early alpha stages for the software, you may run into issues. To see the relationships, go to the puffball menu and make sure that “Show relationships” is clicked.
William Cleveland also deserves mention in graphical visualization of quantitative information. 🙂
NZgrapher is also a great site to creating box and whiskers graphs.