S2 · L022:09
The Button That Raised Millions
Let customers vote with their behaviour: form a hypothesis, test one thing, wait for real numbers, and pair data with talking to people.
Metrics
Glossary
Statistical significance
A measure of how unlikely a result would be if there were really no difference between the versions you tested. It tells you whether a difference is probably not just noise; it doesn't tell you whether the difference is big enough to matter.