CGI Data Scientist Interview Questions
The questions to prepare for a CGI Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Explain what CTEs are and their advantages in SQL queries.
CGIUse GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
Housecall Pro
Equifax
XYZRank completed product sales by month using joins, aggregation, date truncation, and ROW_NUMBER().
CGI
Cgi Nederland
CGI GroupAggregate BI tool feedback to show each tool's good sides, bad sides, review count, and average rating.
CGICgi NederlandCompare Random Forest and Gradient Boosting, then choose the right ensemble for a supervised learning task.
CGITests ability to communicate statistical concepts clearly and accurately to non-technical stakeholders.
CGIExplain when to use precision, recall, F1, or ROC-AUC for a classification model.
CGIDefine a success metric for a new feature that captures real user value, not just raw usage.
CGIExplain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.
CGIDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
CGITests performance tuning, vectorization, and scalable data handling in Python for large datasets.
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