Peter Enns writes:
Given the various comments on your blog about evolving survey methods (e.g., Of buggy whips and moral hazards; or, Sympathy for the Aapor), I thought you might be interested that the Roper Center has updated its acquisitions policy and is now accepting non-probability samples and other methods. This is an exciting move for the Roper Center.
Jeez. I wonder what the President of American Association of Buggy-Whip Manufacturers thinks about that!
In all seriousness, let’s never forget that our inferences are only as good as our data. Whether your survey responses come by telephone, or internet, or any other method, you want to put in the effort to get good data from a representative sample, and then to adjust as necessary. There’s no easy solution, it just needs the usual eternal vigilance.
P.S. I’m posting this one now, rather than with the usual six-month delay, because you can now go to the Roper Center and get these polls. I didn’t want you to have to wait!