Sample Ratio Mismatch (SRM): How to Detect It
Many product decisions in online companies rest on A/B tests. We show one version of the website to one group
Blog Name
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Measuring Loyalty Program Effectiveness Without Bias
A supermarket chain runs a loyalty program across 180 stores. The program has been live for almost two years, and
Incrementality vs Attribution in Marketing
In 2012, eBay switched off its paid brand search ads on Yahoo and MSN and watched what happened to sales.
Confidence Interval vs Credible Interval: An A/B Test Example
Every statistics handbook covers confidence intervals. And everyone who has ever studied statistics has been confused by the fact that
CausalImpact in Python: Measure Campaign Lift
Some of the most important analytics decisions are made without an A/B test. For example, a marketing campaign can be
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Sample Ratio Mismatch (SRM): How to Detect It
Many product decisions in online companies rest on A/B tests. We show one version of the website to one group