There is an interesting recent blog posting at http://www.statsblogs.com/2013/02/18/revisiting-clevelands-the-elements-of-graphing-data-in-ggplot2/

This is interesting for several reasons:

1. The author is rereading Cleveland’s book, the primary book for our class.
2. It gives you some nice illustrations of dotplots (the focus of your blog homework this week).
3. Also it mentions the following good general principles in constructing statistical graphs.

• A graphic should display as much information as it can, with the lowest possible cognitive strain to the viewer.
• Visualization is an iterative process. Graph the data, learn what you can, and then regraph the data to answer the questions that arise from your previous graphic.