Evaluating a 15 % reduction in post‑card height

Q: Evaluating a 15 % reduction in post‑card height

This question evaluates proficiency in experimentation and product analytics, specifically experimental design, metric selection, and diagnostic analysis for differing regional outcomes.

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Analytics & Experimentation questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master analytics & experimentation interviews.

Question

Scenario

You own the feed UX for a social app. Designers propose shrinking each post card’s height by 15% to show more content per scroll, aiming to increase session depth and ad load.

You must measure scroll efficiency and user engagement, and later diagnose why U.S. revenue rises while Thailand’s falls after launch.

Questions

Measuring impact of a 15% post card height reduction

How would you design the experiment and what metrics would you track? (Hint: visible posts per view, scroll speed, ad impressions)

Divergent geo outcome

After launch, U.S. revenue is up but Thailand is down. What would you do next? (Hint: local content mix, bandwidth constraints, ad pricing)

Evaluating a 15 % reduction in post‑card height

Scenario

Questions

Solution

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