Formula to determine sample size



Hi everyone,

I am trying to come up with a calculated metric that will estimate the necessary sample size to draw meaningful conclusions from an A|B test. I have been able to do this with binary metrics, like conversion, but I want to study other KPIs in the same way. Does anyone know a way to estimate minimum sample size for something none-binary, like revenue per visitor, or average order value?

I know that adobe provides a test calculator for this sort of this, Adobe Target Sample Size Calculator, but is there a way to do this with a calculated metric so that I can track my progress in real time in workspace?



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