Digital product
A/B Test Result Calculator
A pooled z-test on your result, the sample size the test actually needed, the smallest lift your traffic can detect, and an honest warning about the three ways teams routinely fool themselves.
xlsx· v2.0· 83.9 KB
What you’ll get
- Enter visitors and conversions for both variants.
- Read the confidence level, then the sample check.
- Planner sizes the test before you start it.
- Pitfalls covers peeking, multiple variants and false significance.
- 11 tabs, with a dashboard, diagnostics and benchmarks
- Every formula visible, every input unlocked and editable
- Five worked examples built in, switchable and editable
- Yours to keep. Works offline, no account needed