Certificate of Achievement
This is to certify that
Lewis Widdowson
course on
March 4, 2022
Certificate: 47442921
has successfully passed the
Statistics for A/B testing

Lewis Widdowson
10-class course + final exam
Become a proper optimizer and know your stats. If you’re not fluent in A/B testing statistics, you won’t be able to tell whether your tests suck. A lot of your “winning” tests are probably not winners at all. Learn to call bullshit when needed, and be the person who advocates proper scientific approach in your team.
You’ll learn:
+ How to run A/B tests with a sound statistical design.
+ How to ask the right questions, avoid common mistakes, and get insights through statistics.
+ An in-depth understanding of statistical hypothesis testing and concepts like statistical significance, confidence intervals, statistical power, and others.
Skills / Knowledge
- statistics
- a/b testing
- conversion optimization
- ecommerce
- cro
Issued on
March 4, 2022
Expires on
Does not expire