He ran some simulated A/B tests using my Bayesian A/B testing technique (which is now powering VWO). He showed that while peeking does ensure that loss < specified threshold, if you don't peek the loss will be even lower.
So although peeking is still valid, that validity does come at a cost.
He ran some simulated A/B tests using my Bayesian A/B testing technique (which is now powering VWO). He showed that while peeking does ensure that loss < specified threshold, if you don't peek the loss will be even lower.
So although peeking is still valid, that validity does come at a cost.