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Ace the Product Analytics Job Interview

Sample Question: Threaded Comments

Understand the impact of adding threading to comments in a social product context. Learn to analyze key metrics like comments per user and posts per user, develop hypotheses explaining user behavior changes, and identify appropriate metrics to validate these hypotheses using before-and-after or controlled tests. This lesson helps you apply metric trade-off analysis to real product scenarios.

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Problem

Let’s say we’re working on Facebook Groups. A product manager decides to add threading to comments on group posts. We see comments per user increase by 10%, but posts go down 2%. Why would that be?

Additionally, what metrics would prove our hypotheses?

Try answering this on your own before continuing. Use the hints below if you are stuck.

Solution

When comments ...