An A/B Split Testing Calculation Tool for Statistical Significance

Have you every wondered if your A/B test is statistically significant? If you aren't running your test directly with a tool like Optimizely that does this calculation for you, you may not know the math necessary to know if your test version is statistically significantly better or worse than the control version.

We've published this Google Sheet to help. 

This sheet runs a Chi-Squared test to determine if the test is conclusive, and whether or not the test version is an improvement or not. The confidence level is set at 5%. 

Let us know if you have any questions, improvements or suggestions!