Remove Business Objectives Remove Knowledge Discovery Remove Measurement Remove Testing
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Variance and significance in large-scale online services

The Unofficial Google Data Science Blog

As with any enterprise, the goal of the service provider is to better satisfy its users and further its business objectives. Well, it turns out that depending on what it cares to measure, an LSOS might not have enough data. For this purpose, let’s assume we use a t-test for difference between group means.