In part 3 of this 5-part blog series about ‘Building a Culture of Optimization’ I’m going to talk about the importance of bringing your organization up to speed on the math behind the tests. You can look back and see part 1 on the basics and part 2 on good test design. Part 3: Know the Math! Give your peers a short stats lesson (but keep it light)! What does someone running an A/B or MVT test need to know about math? How detailed should they be? Here is what I tell all of my coworkers: Statistical Confidence = confidence in a repeated result The confidence level, or statistical significance indicate how likely it is that a test experience’s success was not due to chance. A higher confidence indicates that: – the
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