Estimation Games Quant Interview Prep
How to prepare for estimation games in quant interviews, including confidence intervals, updates, and calibration.
Candidates facing games based on guessing quantities or setting ranges.
What estimation games test
Estimation games test calibration: how well your stated confidence matches reality. They also test whether you can update ranges as new information arrives and whether you understand the cost of overconfidence.
Concrete example
If asked for a 90 percent confidence interval for the number of daily flights at a major airport, a narrow range may sound impressive but fail badly. A useful answer explains the estimate and why the interval width matches your uncertainty.
How to practice
Keep a calibration log. For each estimate, record your range, confidence, and actual answer when available. If your 80 percent intervals only contain the truth half the time, widen them until your calibration improves.
Calibration drill
Before checking an answer, write the range and confidence level you would be willing to stand behind. Over many prompts, compare hit rate to confidence instead of judging one guess emotionally.
Common mistakes
Candidates anchor on a first guess and refuse to move. Another mistake is giving one number when the game asks for uncertainty. In trading, uncertainty is part of the quote.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.