Luxoft Data Scientist Interview Questions
The questions to prepare for a Luxoft Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Pick the right metrics to evaluate a regression model and explain what each one tells you.
LuxoftBuild a classifier for a highly imbalanced dataset and choose metrics, sampling, and thresholds that fit the minority class.
LuxoftCalculate each customer's average sale using GROUP BY, AVG, NULL filtering, and descending order.
LuxoftPractical approach for maintaining data quality across ML ETL pipelines, orchestration, and repeatable data processing.
LuxoftExplain what statistical significance means and why it matters when interpreting experimental or analytical results.
LuxoftIdentify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
LuxoftInvestigate why a key KPI moved the wrong way after a product change and separate signal from noise.
LuxoftTests product thinking and ability to define measurable engagement metrics.
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Join policy and ISO ClaimSearch claim data to aggregate claim counts and incurred losses by state and policy type.
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Marsh
Broadridge Financial SolutionsFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
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Informatica