Jane Street Data Analyst Interview Questions

Compute the expected draw on which the third red marble appears using order statistics and expected value.

DistributionsSamplingprobabilityJane Street

Use recurrence and a geometric series to calculate the probability that the first player wins an alternating die-rolling game.

Distributionsprobabilitymathematical reasoningJane Street

Use rotational symmetry to determine whether the first or second player has a forced win in the quarter-placement game.

Decision Makingprobabilitymathematical reasoningJane Street

Use backward induction and expected value to find the optimal reroll thresholds and net value of a three-roll die game.

Decision MakingprobabilityExpected ValueJane Street

Compute the probability of reaching at least $100 before bankruptcy in a repeated fair-coin game with asymmetric gains and losses.

Bayesian Reasoningprobabilitymathematical reasoningJane Street

Tests how clearly candidates connect analytical experience to Jane Street through ownership, judgment, collaboration, and measurable impact.

achievementbehavioralskillsJane Street