Concise summary of commands for using complex samples

Ever wondered how to correctly take into account the complex sampling design of a national survey? The good folks at RTI put together a nice appendix for common statistical packages: Table K1 From the 2011–12 National Postsecondary Student Aid Study (NPSAS:12) Data File Documentation, Appendix K.

Power analyses for matching

A colleague at RTI asked me about power analyses for PSM, specifically, should he assume dependent samples for his power analysis? Recall that with dependent samples, we pair observations at the analysis stage. For example, we might calculate the change over time for two observations of the same individual, or compare husbands’ and wives’ perception…

Sampling theory in American fiction

From Never Go Back: He said, “No one is here to work with you, boy. We’re here to kick your butt and take our car and our money back.” “OK,” Reacher said. “We can go down that road, if you like. But there’s no reason why all of you should go to the hospital. You…