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# ask-questions
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billowy-window-97200

12/12/2023, 1:52 PM
Bayesian Evaluation of AB Test
Hey Folks, Is there any documentation I can deep dive into about how Growthbook evaluates the AB tests using the Bayesian Approach (defining prior, likelihood, etc.)?
f

future-teacher-7046

12/12/2023, 2:01 PM
We have some documentation on our stats engine (includes a link to our Whitepaper) - https://docs.growthbook.io/statistics/overview
b

billowy-window-97200

12/12/2023, 2:07 PM
Thanks a lot @future-teacher-7046
@future-teacher-7046 would you have by any chance a numerical example of the bayesian approach? I read the docs you sent but some parts were a bit confusing for me. For example, how does D1 and D2 are generated.
f

future-teacher-7046

12/13/2023, 4:33 PM
Our stats engine is fully open source if you wanted to look at the python code and see what's happening under the hood - https://github.com/growthbook/growthbook/tree/main/packages/stats/gbstats/bayesian
b

billowy-window-97200

12/13/2023, 4:37 PM
Ahh cool! Thanks a lot @future-teacher-7046 for sharing 🙂
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