Statistical Significance Calculator
Statistical Significance Calculator
Determine if your A/B test results are statistically significant and reliable for making business decisions.
Test Data Input
Control (Original)
Variation (New)
Results
Enter your test data to calculate statistical significance
Understanding Statistical Significance
Learn how to interpret your A/B test results correctly
What is Statistical Significance?
Statistical significance indicates whether the difference between your control and variation is likely due to the changes you made, rather than random chance.
- P-value < 0.05 = Statistically significant
- 95% confidence level is industry standard
- Lower p-value = higher confidence
Best Practices
- Run tests for at least 1-2 weeks to account for weekly patterns
- Ensure adequate sample size before concluding
- Don't stop tests early just because they look significant
- Consider practical significance alongside statistical significance