CGI Group Data Scientist Interview Questions
The questions to prepare for a CGI Group Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Rank customers by total revenue within each region using a window function.
CGI GroupRewrite a slow PostgreSQL reporting query to reduce scanned rows, avoid join multiplication, and return accurate monthly site metrics.
Continental Finance
Capgemini
DISHDesign an A/B test for a new digital product launch with clear metrics, power, guardrails, and a defensible ship decision.
CGI GroupDesign an experiment that accounts for novelty effects and network spillovers before deciding whether to ship.
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Explain how to choose an appropriate significance test based on metric type, study design, and the null hypothesis.
CGI GroupExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
CGI GroupExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
CGI GroupDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
CGI GroupTests your product thinking and ability to define metrics that drive outcomes while managing risks.
CGI Group