Virtual Vacation

While I’m on vacation, I’m providing links here to some other writing about numbers from around the Web. How important was it for pollsters to try to reach cellphone-only households? Brian Schaffner, a political scientist at the University of Massachusetts, Amherst, estimated accuracy for those national polls that did and didn’t dial cellphones, and found that those that didn’t, surprisingly, were slightly closer to the actual margin. A few caveats: Other factors may have hampered those pol