Infer distribution and choose robust statistics
Company: Google
Role: Data Scientist
Category: Statistics & Math
Difficulty: medium
Interview Round: Technical Screen
Overview: Infer what distribution generated 10,000 session revenues from summary statistics alone, then choose a transformation, a median interval, an A/B test, and a tail probability. The 65% zeros, a heavy upper tail, and a mean that must agree with the percentiles make standard tests and medians unreliable.
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