On Mon, Dec 9, 2013 at 6:54 PM, Greg Stark <st...@mit.edu> wrote: > > This "some math" is straightforward basic statistics. The 95th > percentile confidence interval for a sample consisting of 300 samples > from a population of a 1 million would be 5.66%. A sample consisting > of 1000 samples would have a 95th percentile confidence interval of > +/- 3.1%.
Incidentally I got this using an online sample size calculator. Google turns up several but this one seems the easiest to use: http://www.raosoft.com/samplesize.html -- greg -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
