Pulling Back The Curtain on P-Values (or How I Learned To Love Small Data)
For all of the talk about how awesome (and big, don’t forget big) Big data is, one of the favorite tools in the conversion optimization toolkit, A/B Testing, is decidedly small data.
Optimization, winners and losers, Lean this that or the other thing, at the end of the day, A/B Testing is really just an application of sampling.
You take couple of alternative options (eg. ‘50% off’ v ‘Buy One Get One Free’ ) and try them out with a portion of your users. You see how well each one did and then make a decision about which one you think will give you the most return.