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The Good Experimental Design toolkit Templates and checklist to level-up your experimental design The Good Experimental Design Toolkit by Erin Weigel. As Ronald Fisher learned, experiment data is only as good as the design you put into it. This calls-to-mind a common mantra among data scientists and software engineers: “Garbage in, garbage out.” If the […]

Lukas Vermeer’s manual sample ratio mismatch (SRM) checker Quickly learn if your data is randomized properly or not Simply plug in the sample size you observe for both the control and the treatment groups and learn if there’s likely to be a sample ratio mismatch or not. Randomization is the hidden power behind A/B testing.