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#ask-questions
Title
# ask-questions
b

billowy-window-97200

02/21/2024, 4:09 PM
Prior Updates
Hey there. I would like to understand please how Growthbook updates its
priors
once the experiment starts. I understand Growthbook starts the experiment with Uninformative Priors. After the 1st day of the test, we have some new data. For 2nd day of test, is it considering as a prior: • the data from day 1? • Or the initial prior ? • Or both with weights? One extra question: Would it be possible to have a session with the DS Team to understand the calculation more deeply? Maybe with a practical example? (I'm currently looking at the open-source code but a session would be very helpful)
@helpful-application-7107 in case you could help here
h

helpful-application-7107

02/26/2024, 2:51 PM
oh, hey! sorry we missed your message. The priors are always set using the uninformative priors and don't change over the course of the experiment. We are working on a way to let users define them and or have them set using past data, but for now they are uninformative.
b

billowy-window-97200

02/26/2024, 3:07 PM
Hey @helpful-application-7107 thanks for the reply 🙂 No worries!
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