Metrics question
How would you define meaningful social interaction for Facebook? What metrics you would use to evaluate?
- Meta
- Metrics
- Hard
Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.
Start a mock interview on this question · Mock interview from a job description
What this question tests
Definitional and metrics rigor: can you turn a fuzzy strategic term ('meaningful social interaction') into a concrete, measurable definition.
How to approach it
- Define what 'meaningful' should exclude: passive consumption (scrolling, watching video) without any reciprocal interaction.
- Propose a definition: interactions involving back-and-forth engagement between people, like commenting, replying, or messaging, not just one-way likes.
- Propose supporting metrics: number of comments/replies exchanged between two or more people, and messages sent in response to a post (not just DMs generally).
- Consider a depth signal: conversation thread length, since a single like is much lower-signal than a multi-reply exchange.
- Address a known risk: even reciprocal engagement (arguments, low-quality comment wars) isn't necessarily 'meaningful', so quality flags matter too.
- Define the metric as a ratio or composite: e.g. share of time spent that involves reciprocal interaction versus passive consumption.
What a strong answer includes
- Draws a clear line between passive consumption and reciprocal interaction, since that's the actual distinction 'meaningful' is trying to capture.
- Proposes a concrete, measurable proxy (reciprocal comment/reply threads) rather than staying abstract about 'meaningful'.
- Flags that reciprocal engagement isn't automatically positive, e.g. comment arguments, showing awareness the metric could be gamed or misleading.
- Frames the metric as a composite or ratio rather than a single raw count, which better captures the intended concept.
Common mistakes
- Staying abstract about 'meaningful' without translating it into a measurable proxy metric.
- Treating all reciprocal engagement as automatically positive, ignoring that arguments or spam replies would also count.
Likely follow-up questions
- How would you distinguish healthy reciprocal engagement from toxic comment threads in your metric?
- How would this metric influence the News Feed ranking algorithm?
More metrics questions
- How would you measure the success of Facebook Likes?Meta · Metrics · Medium
- How would you measure improvements made to Facebook messenger?Meta · Metrics · Easy
- Imagine you are the PM in charge of Reactions on Facebook - the new way to interact with posts by using “love”, “haha”, “wow”, “sad”, and “angry” reactions. What would success look like in terms of number of non-like reactions per post at launch and how do you come up with this? Would this number differ by reaction? Why or why not?Meta · Metrics · Hard
- You launched a new signup flow to encourage new users to add more profile information. A/B test results indicate that the % of people that added more information increased by 8%. However, 7 day retention decreased by 2%. What do you do?Google · Metrics · Hard
- Define the metrics for YouTube search.Google · Metrics · Medium
- You are the PM of Instagram app. The MAU has been constant but DAU has declined. What will you do?Meta · Metrics · Medium
More questions from Meta
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 2: Data fluency: SQL, logs, and reading the truth yourself
- Chapter 14: Get the job: the AI PM interview loop