Tag Archives: statistical confidence

The Perils of Poor Data Visualization in CRO & A/B Testing

As any UX & CRO expert should now, the way we present information matters a lot both in terms of how well it is understood and in terms of the probability that it will lead to the desired action. A/B testing calculators and other tools of the trade are no exception and here I will […] Read More…

Posted in A/B Testing, Conversion Optimization, Statistics | Also tagged , , , , , , | Leave a comment

Statistical Significance in A/B Testing – a Complete Guide

Statistical Significance P Value

The concept of statistical significance is central to planning, executing and evaluating A/B (and multivariate) tests, but at the same time it is the most misunderstood and misused statistical tool in internet marketing, conversion optimization, landing page optimization, and user testing. This is not my first take on the topic, but it is my best […] Read More…

Posted in A/B Testing, Conversion Optimization, Multiple Variations Testing, Statistical Significance, Statistics | Also tagged , , , , , , , , | Comments closed