The PDT Partners Probability & Statistics interview is stage 3 of 5 in the PDT Partners interview process, after the Take-Home / Coding (online assessment). Format: 45-60 min - video. Probability, expectation, statistics, and combinatorics -- estimator reasoning and Bayesian updates.
Preparing for this round? Practice the 14 questions mapped to the PDT Partners Probability & Statistics, with worked solutions. A free account saves your progress.
What the Probability & Statistics tests
QuantVault maps 14 practice problems to this round. By topic, the biggest groups are probability (8), statistics (3), expectation (2), combinatorics (1); by difficulty, 3 easy, 11 medium and 0 hard. 2 of them were reported by candidates who interviewed at PDT Partners, most recently in May 2018.
How to prepare for the Probability & Statistics
- Estimator properties -- bias, variance.
- Combinatorial counting done cleanly.
Further reading: How quant superdays work · Behavioral questions at trading firms · Market-making game interview guide.
Question types in this round
The 4 largest question types in the PDT Partners Probability & Statistics practice set; across them the most common sub-topics are discrete probability, independence, symmetry, uniform distribution, conditional probability, expected value. The questions themselves, with worked solutions, are in the round practice.
Probability8 in this round
Statistics3 in this round
Expectation2 in this round
Combinatorics1 in this round
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Frequently asked questions
What is the PDT Partners Probability & Statistics interview?
It is stage 3 of 5 in the PDT Partners interview process, after the Take-Home / Coding (online assessment). Format: 45-60 min - video. Probability, expectation, statistics, and combinatorics -- estimator reasoning and Bayesian updates.
How long is the PDT Partners Probability & Statistics interview?
Candidates report: 45-60 min - video.
What questions come up in the PDT Partners Probability & Statistics interview?
The practice set QuantVault maps to this round centers on probability, statistics, expectation.
How should I prepare for the PDT Partners Probability & Statistics interview?
Estimator properties -- bias, variance. Combinatorial counting done cleanly.
What comes after the Probability & Statistics?
The Regression, ML & Time-Series (stage 4 of 5). Format: 45-60 min - research.
Practice the PDT Partners Probability & Statistics round
Work the 14 mapped practice problems with progress tracking, then move to the next stage of the PDT Partners funnel.