On Mon, Dec 9, 2013 at 6:54 PM, Greg Stark <stark@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