150 Most Frequently Asked Questions On Quant Interviews May 2026

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With the rise of "Alpha Researchers," statistical significance and ML theory are now standard topics. p-values: Explain a p-value to a non-technical person. 150 Most Frequently Asked Questions On Quant Interviews

• Approach: derive from Markov’s inequality for squared deviation; show bound on tail probability.
• Tip: use it to motivate concentration bounds even with little distributional info.

• Approach: C(10,3)=120.
• Tip: show formula nCk = n!/(k!(n-k)!)

147. Explain algorithm to find largest rectangle in histogram.

• Approach: models pick up spurious patterns; use realistic execution assumptions, survivorship bias checks, and orthogonal validation.
• Tip: simulate transaction costs and slippage.

139. Logic puzzle: three boxes labeled apples/oranges/mixed — labels all wrong, how to determine correct labels with one draw?

107. How to ensure reproducibility in experiments and models?