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| From | Dan Waldo <dan_waldo@yahoo.com> |
| To | "yuval.arbel@gmail.com" <yuval.arbel@gmail.com> |
| Subject | Re: st: How do I demonstrate that a sample is randomly drawn from a population? |
| Date | Mon, 15 Apr 2013 05:18:22 -0700 (PDT) |
Dear Yuval, Because I lurk on the Statalist, my replies are late (and often lame, but that's another story). As an afterthought to this discussion thread, I'd make a semantic distinction: your reweighted internet students still do not represent a *random* sample. Rather, they are *representative* of the population in the dimensions on which you post-stratified. They still might not look like the population in other dimensions -- either observed or unobserved. regards, Dan Waldo * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/