Case Studies

Case Studies

Stop Checking Your Dashboard: What Netflix and 48,000 Tests Teach About Peeking

Peeking at A/B tests can inflate false positives to 30%. Learn why fixed sample sizes beat gut checks, with case-study evidence from Netflix and Optim...

Case Studies

How One Peeking Habit Nearly Shipped a Bad Feature: A Case Study

A case study of a product team that ignored sample size and peeked daily. The result: a false positive that would have shipped a bad feature. Learn ho...

Case Studies

A/B Testing: Why Peeking at Your Results Is Sabotaging Your Data

Refreshing your A/B test dashboard daily can push false positives from 5% to 30%. Here's how fixed-horizon testing fails you and why sequential testin...