4 ms·
Roughly a good sample size is around -log(d/2)/(2 e a^2) where d is the significance you want and a is the difference in conversion rates you hope to measure.
by jmount 14y ago
Roughly a good sample size is around -log(d/2)/(2 e a^2) where d is the significance you want and a is the difference in conversion rates you hope to measure. See http://www.win-vector.com/blog/2013/03/a-bit-more-on-sample-size/ http://www.win-vector.com/blog/2013/03/a-bit-more-on-sample-...
- Sprint 14y agoI read that and I have no idea what those values are. Is there an example of this with actual real-life data?
- russell 14y agoHe gave you a reference. Google "statistical sample size". There are several calculators in the results that you can play around. Everybody should take a college level course in statistics, even poets and painters.