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Aug 5, 2013 at 7:06 comment added Maarten Buis @boucekv : a discussion of all prerequisites would require a book. The short answer is: it depends on what you exactly want to do, as that defines what correct means.
Jul 15, 2013 at 9:59 comment added boucekv It would be nice to see all prerequisites that must be fulfilled to make this approach to be correct for actual opinion poll analysis.
Jul 15, 2013 at 9:54 vote accept boucekv
Jul 12, 2013 at 8:19 history answered Maarten Buis CC BY-SA 3.0