Minimum Control Proportion: 24.39% Calculate baseline conversion rate

Calculate MDE

Calculate sample size

Control Size: 2,439 Test Size: 7,561
Baseline Conversion Rate:
%
The expected conversion rate of the control group.
This can be obtained through a monitoring campaign or checking the historical data.
Minimum Detectable Effect (MDE):
%
The minimum relative change in conversion rate you would like to be able to detect. Given a 10% baseline conversion rate and a 20% MDE, the minimum conversion rate of the test group you would like to be able to detect is 10% * (1 + 20%), i.e. 12%.
Sample Size:

The number of all samples, including samples in both test and control group.
Significance Level:
%
The probability of the test rejecting the null hypothesis (H0) when it is true.
Statistical Power:
%
The probability of the test rejecting the null hypothesis (H0) when the alternative hypothesis (H1) is true.