On 29 September 2013 17:23, Ovid <publiustemp-moduleautho...@yahoo.com> wrote: > In particular, there's a little known, but hard problem, in A/B testing: > http://www.einarsen.no/is-your-ab-testing-effort-just-chasing-statistical-ghosts/
Also see http://xkcd.com/882/ ;) Adrian
