beginner
3 min read
Common Testing Mistakes
Pitfalls that invalidate test results
Mistake 1: Testing too many things at once
Creates confusion about what actually drove results.
Mistake 2: Calling tests too early
Early random variation looks like meaningful difference. Be patient.
Mistake 3: Ignoring practical significance
A 2% improvement that's statistically significant may not be worth implementing if it's complex.
Mistake 4: Not having a hypothesis
Testing randomly without theory. Form a hypothesis first, then test it.
Mistake 5: Not documenting results
Forgetting what you've learned. Keep a testing log.