Adecco Italia s.p.a Data Scientist Interview Questions

The questions to prepare for a Adecco Italia s.p.a Data Scientist interview. Questions from real interview reports rank first. Updated daily.

10questions

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Behavioral & LeadershipStart here. 3 questions · ~32 min

Handling Tight DeadlinesEasy

Tests prioritization, ownership, communication, and quality judgment when delivery timelines are compressed.

behavior under pressuretime managementadaptabilityAAdecco Italia s.p.a

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More topics7 questions · ~76 min

Find the top five regions by revenue during the previous calendar quarter.

Diagnose a sudden 20% KPI decline by validating measurement, decomposing drivers, and separating real behavior changes from data issues.

Considerations for A/B Test DesignHard

Design a feature experiment with clear hypotheses, metrics, power, randomization, analysis rules, and safeguards against common pitfalls.

experiment designconsiderationsGuardrail MetricsAAdecco Italia s.p.a

Statistical Significance in Hypothesis TestingEasy

Explain what statistical significance means and why it matters when interpreting experimental or analytical results.

Hypothesis TestingData AnalysisStatistical SignificanceAAdecco Italia s.p.a

SQL Window Functions Moving AverageMedium

Practice

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlAAdecco Italia s.p.a

Choosing Metrics With Competing PrioritiesMedium

Choose the best metric when a process has tradeoffs across speed, quality, and long-term outcomes.

performance trackingmetric selectionPrioritizationAAdecco Italia s.p.a

Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchAAdecco Italia s.p.a

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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min

Identify each user's consecutive website activity streaks using date arithmetic and SQL window functions.

The finish line: interview-readyComplete all 10 questions plus 1 hands-on drill to finish this plan.