One-Week Fermi Estimation Study Plan
A one-week Fermi estimation study plan for quant interviews, covering decomposition, units, ranges, calibration, mocks, and review.
Candidates who need a short estimation prep sprint.
Start with one full prompt
Use the first session to expose the weak layer: unclear target, weak assumptions, unit mistakes, arithmetic, range, or sanity check.
Practice one layer per day
Separate decomposition, units, range building, calibration, and mock follow-ups. Estimation improves faster when the weak layer is isolated.
Concrete week
Run one baseline, two decomposition drills, one unit drill, one range drill, one peer or solo mock, and one review session.
Use actuals carefully
After practice, compare with a rough actual when available. The point is calibration, not memorizing reference answers or treating them as interview facts.
Common mistakes
Candidates often do many prompts without reviewing assumption quality. A one-week sprint needs deliberate repair, not volume alone.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.