Most failed A/B tests are not unlucky, they are flawed. A few common mistakes turn good intentions into false winners and wasted months. Knowing them is the first step to clean results.
Avoiding these traps is exactly what you pay for in our A/B testing service, where method protects the result. We run rigorous testing for businesses across Brisbane and Sydney.
The most common mistake is calling a winner the moment a variant pulls ahead. Early leads swing back constantly. Run the test to its planned sample and a full business cycle before deciding.
Changing several elements in one A/B test means a lift cannot be attributed to any single change. If you want to test many elements together, use a multivariate test designed for it instead.
Running a test on too little traffic, or over an unusual week like a sale or holiday, produces results that will not hold. Plan the sample size and pick a representative period.
| Mistake | The fix |
|---|---|
| Stopping early | Run to the planned sample |
| Too many changes | One variable per test |
| Tiny sample | Calculate sample size first |
| Unusual period | Cover a normal business cycle |
Button colour tweaks rarely move revenue. Spend your testing capacity on high-impact elements like the offer, the headline and the form, where a win is worth shipping.
Before launching, ask whether a win on this test would be worth rolling out. If not, test something that matters more.
Most testing programmes begin within one to two weeks once tracking and goals are confirmed. Contact our Brisbane team on (07) 3184 9197 for a current schedule.
TPR Media operates from Level 34, 1 Eagle Street, Brisbane City QLD 4000, serving clients across Brisbane and Australia-wide.
TPR Media avoids common A/B testing mistakes by running tests to a planned sample, changing one variable at a time, covering a full business cycle and testing high-impact elements.