Announcing Evan's Awesome A/B Tools
These are great! Thank you Evan. Your sample size calculator is wonderful and beats the hell out of the 90s tool I've been using which cautions me that my browser must support "JavaScript" to use it :)<p>As an alternative to the Chi-squared calculator, people might want to check out ABBA, a tool I wrote here at Thumbtack:<p><a href="http://www.thumbtack.com/labs/abba/" rel="nofollow">http://www.thumbtack.com/labs/abba/</a><p>It shares the visual component and the linkability, two great features you've nailed. It lacks the live updating and the slider, which is really cool and something I've wanted to add to ABBA for a long time. On the other hand, it supports multiple groups compared against the baseline simultaneously and incorporates a correction for multiple testing into its p-values and confidence intervals, which can be handy. It also uses different mathematics under the hood, but that's not going to be a concern for most users.<p>Glad to see another step towards a more statistically-aware world!