Minimum Sample Size: 7,690 Calculate baseline conversion rate

Calculate MDE

Calculate control proportion
Control Size: 3,845 Test Size: 3,845
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%.
Control Proportion:
%
 The proportion of the sample to include in the 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.