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Statistics Interview Questions
Statistics questions span the central limit theorem, estimators, regression, correlation and hypothesis testing — the foundation of quant research and data-heavy roles. All 17 statistics questions below come with a full worked solution — sign in to check your answers and track your progress.
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Correlation of X and X²
Two SigmaDE Shaw
Variance of Uniform(0,1)
Goldman SachsCitadel
OLS Slope
Two SigmaAQR Capital
Variance of a Sum
Goldman SachsMorgan Stanley
Central Limit Theorem
Goldman SachsMorgan Stanley
MLE of a Coin
Two SigmaDE Shaw
Covariance of a Linear Transform
Goldman SachsAQR Capital
Range of Correlation
Goldman SachsCitadel
Variance of a Scaled Variable
Goldman Sachs
Variance of the Sample Mean
Two SigmaDE Shaw
The German Tank Problem
Two SigmaDE Shaw
Width of a 95% Confidence Interval
Goldman SachsBlackRock
From Correlation to R²
Two SigmaAQR Capital
Correlation of X with X + Y
Jane StreetCitadel
Median of an Exponential
DE ShawJump Trading
A One-Sample z-Statistic
Morgan StanleyGoldman Sachs
Simpson’s Paradox
Two SigmaCitadel
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