Calculate statistical significance for A/B testing
Control
10.00%
Variant
12.00%
Lift/Loss
+20.00%
Confidence Interval ({confidenceLevel}%)
[-0.74%, 4.74%]
Sample size needed for each group (to reach 95% confidence)
1,881
Current sample size
1,000
Note: Current sample size may not be large enough to achieve statistical significance. Approximately 1,881 visitors are needed for each group.