Probability Interview Final Checklist
Probability interview final checklist covering sample space, conditioning, independence, approximations, arithmetic, and communication.
Candidates in final review mode for probability, counting, and expected value.
Sample-space checklist
State outcomes, decide whether order matters, and confirm whether outcomes are equally likely before counting.
Conditioning checklist
When information is revealed, update the denominator or distribution before computing probabilities, expectations, or variance.
Independence checklist
Before multiplying probabilities, ask whether independence is given, justified, or false. If not independent, use conditional probabilities.
Approximation checklist
For normal, Poisson, or tail approximations, state the assumptions, expected scale, and whether the answer is approximate.
Concrete final pass
After solving, check units, bounds, extreme cases, and whether the answer would change in the right direction if an input changed.
Common mistakes
Candidates often finish with a number but no explanation. A final checklist should protect both correctness and communication.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.