How would you compare Facebook vs Instagram Stories?
Overview
This question evaluates a data scientist's competency in product analytics, experimental design, and causal inference for short-form ephemeral content, including metric definition, overlap and cannibalization assessment, and trade-off analysis.
Meta
Nov 1, 2025, 12:00 AM
Data Scientist
Onsite
Analytics & Experimentation
0
0
You work on short-form ephemeral content. Both Facebook Stories and Instagram Stories exist, and leadership asks: Which product should we invest in, and how do we measure success without being misled by cannibalization?
Design an analysis/experiment plan:
- Define primary , diagnostic , and guardrail metrics for Stories.
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Explain how you would compare Facebook vs Instagram Stories given:
- Overlapping users across apps
- Potential cannibalization of Feed/Reels and messaging
- Different baselines and user intents per app
- Propose at least one causal identification strategy (e.g., A/B test, geo experiment, diff-in-diff) and discuss key biases/confounders.
- Describe what decision you would recommend given possible outcomes (e.g., engagement up but revenue down; creator supply up but user retention flat).
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