The short answer can be found in item 2 in this link: http://science.widener.edu/svb/stats/error.html
The long answer is "I highly recommend Error Analysis by John Taylor:" http://science.widener.edu/svb/stats/error.html If you can find the first edition (which can fit in your pocket) then consider yourself lucky. Later editions suffer book bloat. James On Jun 4, 2011, at 10:44 AM, capricy gao wrote: > > If means and standard deviations of A and B are known, how to estimate the > variance of A/B? > > Thanks.
