Google Data Scientist Interview Experience — Phone Screen Plus Five Onsite Rounds, Passed HC

Google·Data Scientist·Oct 2025
OnsiteTechnical ScreenOffermedium

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Published

Curated and edited by PracHub

Practice the questions from this interview

Test if one value comes from N(μ,σ²)
Define and sample a truncated normal
Handle p≈n linear regression with L1
Assess education–income effect credibly
Generate binomial matrix and column-normalize
Build and evaluate bad-link classifier
Diagnose 10–11% usage drop across geos
Explain and resolve Simpson’s paradox
Minimize L2, L1, and quantile losses
Estimate unbiased ad scores with many reviewers

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