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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.

What difficulty level is this interview question?

This is a medium difficulty Analytics & Experimentation question, commonly asked during Onsite rounds at Meta.

What role is this question designed for?

This question is commonly asked for Data Scientist candidates at Meta during technical interviews.

Launch Sticker-Reply Feature in Facebook Groups? | Meta Interview Question

Launch Sticker-Reply Feature in Facebook Groups?

Last updated: Mar 29, 2026

Quick Overview

This question evaluates a data scientist's skills in product analytics, experiment design, metric definition, and causal inference for a group-based social feature launch.

Launch Decision: Sticker-Reply Feature for Facebook Groups

Context

You are evaluating whether to launch a sticker-reply feature in Facebook Groups. The feature allows members to reply to posts or comments with a sticker (a lightweight, expressive response) in group threads.

Assume: the feature is available only inside Groups; users may belong to multiple groups, and group interactions can influence others (network effects).

Tasks

State clear objectives and hypotheses for the feature.
Define success metrics (primary and secondary) and guardrails.
Propose an experiment design, including assignment unit, ramp, duration, and power.
Describe how you would analyze the results and decide whether to launch.
Call out key trade-offs and risks.

Solution

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