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
If means and standard deviations of A and B are known, how to estimate the
variance of A/B?
Thanks.
http://en.wikipedia.org/wiki/Propagation_of_uncertainty
From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of
capricy gao
Sent: Saturday, June 04, 2011 10:45 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Question about the statistical analysis-might be a bit off
topic
