Evaluate Impact of New Roblox Homepage Tab

Q: Evaluate Impact of New Roblox Homepage Tab

This question evaluates a data scientist's skills in experimental design, causal inference, metric selection (primary outcomes and guardrails), power analysis, segmentation, and confounder mitigation within product analytics.

Q: How do I approach Analytics & Experimentation interview questions?

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

Question

Measuring the Impact of Replacing a Homepage Tab

Scenario

Roblox plans to replace an existing homepage tab with a new one across eligible users. The goal is to understand whether the new tab improves user engagement and downstream outcomes without harming core health metrics.

Task

Design an evaluation plan that includes:

Hypotheses
Primary outcome metrics and guardrail (safety) metrics
Experiment design (unit of randomization, allocation, instrumentation)
Sample size, duration, and ramp plan
Segmentation
Success criteria and decision rules
Confounders and how you will mitigate them

Hints: Consider the engagement funnel (CTR → launches → playtime → retention), power analysis, guardrails, and potential confounders.

Evaluate Impact of New Roblox Homepage Tab

Measuring the Impact of Replacing a Homepage Tab

Scenario

Task

Solution

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