## Metadata - Authors: [[chris-stucchio|Chris Stucchio]] [[tue|Tue]] - Full Title:: Agile a/B Testing With Bayesian Statistics and Python - Category:: #🗞️Articles - Document Tags:: [[Bayesian testing|Bayesian testing]], - URL:: https://web.archive.org/web/20150419163005/http://www.bayesianwitch.com/blog/2014/bayesian_ab_test.html - Finished date:: [[2024-07-15]] ## Highlights > Before starting the test, you need to choose two quantities. The first is the *prior* - this is what you believe about conversion rates *before* you run the test ([View Highlight](https://read.readwise.io/read/01j2vh9pvamswmykyhqq43ymp7)) > The second quantity you need to choose is your *threshold of caring*, or your `delta`. This measures how small a conversion rate delta needs to be for you to not care ([View Highlight](https://read.readwise.io/read/01j2vh9y53qcw5sfj4vw0x8pa5))