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Prep plan

Updated weekly · Last refresh Oct 17

Cgi Nederland Data Analyst Interview Questions

The questions to prepare for a Cgi Nederland Data Analyst interview. Questions from real interview reports rank first. Updated daily.

29questions

~4htotal time

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MetricsStart here. 5 questions · ~42 min

Diagnose Churn by Customer SegmentMedium

Investigate why one customer segment drives most churn and what actions to take.

User SegmentsChurnDiagnosis

Cgi Nederland

Choose a Product North StarMedium

Pick a North Star Metric that reflects customer value, business impact, and long-term product health.

Product-Market FitNorth Star MetricKPIs

Cgi Nederland

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Pipelines4 questions · ~34 min

Batch vs Stream Processing Trade-offsMedium

Compare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.

InfrastructureStream ProcessingETL

Cgi Nederland

Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch Processing

Cgi Nederland

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Behavioral & Leadership14 questions · ~118 min

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More topics6 questions · ~50 min

BI Tools Trade-offsEasy

Practice

Aggregate BI tool feedback to show each tool's good sides, bad sides, review count, and average rating.

analytics toolsbi toolsAggregations

Cgi Nederland

Eliciting Stakeholder Data NeedsMedium

Tests stakeholder discovery, requirements gathering, and alignment to business outcomes.

Jobs to Be DoneUser NeedsUse Cases

Cgi Nederland

Designing Dashboard A/B TestsHard

Tests experimental design, metrics selection, and decision-making for dashboard changes.

MDEGuardrail MetricsA/B Testing

Cgi Nederland

Finding Drivers of SalesHard

Tests statistical reasoning for feature impact and causal or predictive interpretation.

RegressionCorrelationCausal Inference

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min

SQL Running Total with CTEsMedium

Practice

Practice drill

Calculate each client's chronological transaction running total using CTEs and window functions.

Window FunctionsData ManipulationCTEs

Cgi Nederland

Group By in SQLMedium

Practice

Practice drill

Summarize quarterly work logs by team, including teams with no matching logs and separate completed and open hours.

null handlingJoinsGroup By

Cgi Nederland

The finish line: interview-readyComplete all 29 questions plus 2 hands-on drills to finish this plan.