Now, you can specify which audience you want to calculate experimental power for, by selecting any existing Feature Gate via the Power Calculator.
To do this, go to the Power Calculator (either under “Advanced Settings” in Experiment creation or via the “Tools & Resources” menu) and select “Population”.
This will kick off an async power calculation based on the selected targeting gate’s historical metric value(s), and you will be notified via email and Slack once your power analysis is complete.