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LinkedIn·Machine Learning Engineer·Technical Phone Screen·Senior

Senior
May 2026

Summary

Interviewed for an ML engineer role at LinkedIn and got a statistics question. Pretty bare bones from what I can tell, not much else to go on.

Questions Asked (1)

Q1

Walk me through your experience with statistics.

Product Analytics & MetricsTechnical Trade-offs
Author's notes

Broad question and I kind of rambled.

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AI HintsAI Generated

Suggested Approach

Structure your answer as a narrative that progresses from foundational statistical knowledge to applied ML experience, emphasizing how you've used statistics to solve real problems and make trade-offs. Highlight specific projects where statistical rigor improved model performance or business outcomes, and connect your experience to LinkedIn's scale and product needs.

Pro tip: Quantify the impact of your statistical work (e.g., 'improved model AUC by 5%' or 'reduced false positives by 20%') and mention how you've communicated statistical concepts to non-technical stakeholders to drive decisions.

1. Foundation

Briefly summarize your formal statistical training and core concepts you're proficient in (e.g., hypothesis testing, regression, Bayesian methods).

2. Application in ML

Describe how you've applied statistics in ML projects, such as feature engineering, model evaluation, and experiment design.

3. Trade-offs and Decisions

Give an example where you made a technical trade-off (e.g., bias-variance, model complexity vs. interpretability) using statistical reasoning.

4. Impact and Scale

Quantify the outcome of your statistical work (e.g., improved metrics, business impact) and mention scale (e.g., large datasets, A/B tests).

5. Communication and Collaboration

Explain how you've explained statistical results to cross-functional teams and influenced product decisions.

Key Points to Mention

  • Hypothesis testing and A/B testing for product experiments
  • Regression and classification metrics (e.g., precision/recall, ROC-AUC)
  • Bayesian methods and probabilistic modeling
  • Bias-variance trade-off and regularization techniques
  • Causal inference and confounding variables
  • Statistical significance vs. practical significance in business contexts

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.