Fermi Estimation Peer Practice Guide
Fermi estimation peer practice guide for interviewer roles, prompt choice, follow-ups, review rubrics, and next drills.
Candidates practicing open-ended estimates with peers.
Practice the interaction
Fermi peer practice should include clarifying questions, assumptions, follow-ups, and review. The conversation is part of the skill.
Use follow-ups
The peer interviewer should change an assumption or provide a benchmark. The candidate should update the estimate rather than restart.
Concrete session
Run one ten-minute estimate, one follow-up, and five minutes of review. Record target unit, assumption quality, arithmetic, range, and sanity check.
Review the range
Feedback should include whether the range matched uncertainty and whether the candidate identified the dominant assumption.
Common mistakes
Peers often focus only on the final number. Fermi practice should review structure, assumptions, units, and adaptability.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.