Sample size estimator for A B test

[pkaf]

Describe the workflow you want to enable

Given base conversion rate, significance level and power provide sample size needed to conclude an A/B test with some minimum detectable effect.

Describe your proposed solution

https://www.evanmiller.org/ab-testing/sample-size.html

Additional context

It is quite handy tool in determining sample size required during an experimentation design.

[rasbt]

This would be a nice feature indeed.

[pkaf]

Cheers. Will work on this.