When I read Robert Allison's article about the cost of a taxi ride in New York City, I was struck by the scatter plot (shown at right; click to enlarge) that plots the tip amount against the total bill for 12 million taxi rides. The graph clearly reveals diagonal and
A recent post, Jedi SAS Tricks: The DATA to DATA Step Macro, engendered a lot of response on Twitter. One of the re-tweets included a call to action - make this a button in Base SAS!
The Barnett Shale in North Texas hit a historic mark on April 25: Its rig count fell to zero. Two hundred rigs once harvested the 40 trillion cubic feet of natural gas in this massive basin, stretching beneath 17 Texas counties. Today, nothing. This dramatic silence in North America’s second-largest
