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Google Quantitative Analyst Interview Questions

The questions to prepare for a Google Quantitative Analyst interview. Questions from real interview reports rank first. Updated daily.

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1
Statistics & ProbabilityStart here. 7 questions · ~78 min
Comparing UX Experimental DesignsHard

Compare UX experimental designs, their estimands, sources of bias, and appropriate statistical tests.

ExperimentationCausal Inferenceexperimental designGoogle
Interpreting P-Values in UXHard

Explain why a p-value above 0.05 leads to failing to reject the null hypothesis, not proving it true.

Hypothesis TestingStatistical SignificanceP-ValuesGoogle
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2
Behavioral & Leadership7 questions · ~78 min
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3
More topics6 questions · ~67 min
Basic Matrix Calculations in NumPyMedium
Practice

Compute matrix addition, multiplication, transposition, and determinant with consistent numeric output.

CodingArraysArray ManipulationGoogle
Predict Phone Battery LifeMedium

Estimate remaining phone usage time from battery level using interpolation, feature selection, and a cold-start fallback.

analyticsoperational metricsmetric selectionGoogle
Schema Design for Video SharingMedium
Practice

Design a video-sharing schema and report public videos with creator details and view totals.

data relationshipsdatabase designAggregationsGoogle
Least Squares With RegularizationMedium

Assesses your ability to derive least squares solutions and reason about regularization effects.

RegularizationRegressionGoogle
Identify Seasonality in DataHard

Detect recurring quarterly patterns, separate seasonality from trend and noise, and explain how the finding should affect KPI interpretation.

analyticsKPIsdiagnostic processGoogle
Sliding Window or O(n) SolutionMedium
Practice

Use a sliding window to find the longest contiguous subarray containing at most k distinct values in O(n) time.

ArraysSliding WindowArray ManipulationGoogle

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