Noob Question: I have recently gotten into Bayesian AB testing, but I am lost on how to specify duration of test and number of observation we are looking to observe. Compared to frequentist approaches that have a clear formula for this, how do we a approach this as bayesians?

Maybe a precision-based power analysis could help? You can check Kruschke’s Doing Bayesian Data Analysis chapter 13. The idea is to iteratively run the model with simulated data until reaching a desired precision (pre-specified HDI width) for one or more parameters in the model. This could provide …

Bayesian AB Test Duration and Sample Size

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DangoNoChain January 17, 2024, 4:40pm 3

Ill check this out! Thank you!

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Bayesian AB Test Duration and Sample Size

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