Data Visualization Links from 1/20/12

Here’s the source of the data I used on time intervals between eruptions of the geyser Old Faithful.
And here’s the paper that included comparative histograms of luminosity data on Be stars.
This isn’t quite a set of hollow histograms, but this chart of Facebook mentions of Republican presidential candidates over time (shared on Diigo by your classmate Scott) requires similar visual comparison skills.
What can go wrong with pie charts? Plenty.
Finally, here’s a halfway decent use of pie charts: a citizen’s guide to fancy coffee drinks.

Math 216: Statistics for Engineering