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The Importance of Product Experiments
A lot of times when we talk to people, they bring up the statistical power as one of the things that they're worried about. You don't need large sample sizes to actually run effective experiments on the product. If you're looking for 0.1, 0.01% improvement in a particular metric, you definitely need hundreds of thousands or maybe even millions of samples. Most companies that we work with, we're always looking for 5-10% wins for which you don't need that many samples.