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#ask-questions
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# ask-questions
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bored-beach-68253

02/28/2024, 4:03 AM
Hi everyone I'm trying to use GrowthBook to do AB testing for company's product. I want to have a POC (Proof Of Concept) on my local machine first. I followed the instruction in this video

https://www.youtube.com/watch?v=J8tyS4j3DtA

, and able to setup something similar. When I starting the experiment, different value of feature flag will be sent to different user. My issue is that, I'm now receiving no result from the experiment. Is this mandatory to setup the data warehouse ? 🤔 I just want to check on local if it is suitable or not first. Thank you 🙏
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fresh-football-47124

02/28/2024, 6:13 AM
Hi Truong - yes you do need a data warehouse of some description
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GrowthBook doesn't store any raw event data
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bored-beach-68253

02/28/2024, 6:42 AM
hi @fresh-football-47124 my project is now using GA4, as far as I know, I will have to connect through BigQuery I'm just wondering, how the statistic will be calculated ? Is this through the event count for each event ? I want to know if it is possible to send custom events and use that as metric inside growthbook. Thank you
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fresh-football-47124

02/28/2024, 12:06 PM
Any data or events that make it to BigQuery (and can be tied to the user who was assigned a variation) can be used as a metric within GrowthBook
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