RECOMMENDED BLOG: The Numbers Guy. "Carl Bialik examines the way numbers are used, and abused." Free from the Wall Street Journal. Recent examples:
The Trouble With Ranking Life-Expectancy Numbers (August 27)
Calculating the Cost of Weddings (August 23): noting the difference between the mean and the median price of matrimony
Increasingly in Baseball, Stealing Pays (August 21): Go, METS! Literally.