4 ms·
You scooped mine by like 20 minutes, which is weird, so I'll just put this here: http://www.experimentcalculator.com/ http://www.experimentcalculator.com/ *ed
by mcfunley 13y ago
You scooped mine by like 20 minutes, which is weird, so I'll just put this here:
http://www.experimentcalculator.com/ http://www.experimentcalculator.com/
*edit: yours is awesome. Nice work.
- arkitaip 13y agoI tried and liked the simplicity of yours! I also learned that as a small ecommerce - 5k/day - you may never have enough visitors to effectively run reliable tests :(
- mcfunley 13y agoDepends: if you're small, then you might have low-hanging fruit and bigger conversion increases might be possible. If that happens to be true then measuring things is tractable.
- drewda 13y agoThat's also why experimental psychologists have mixed feelings about running power analyses* to figure out how many participants they'll need in a study to to yield statistically meaningful results--it's almost always a humbling high figure. * http://en.wikipedia.org/wiki/Statistical_power http://en.wikipedia.org/wiki/Statistical_power