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Transport for London Interview Questions

The questions to prepare for Transport for London interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

Measure Marketing Campaign Success
Easy

Define campaign success using business KPIs, funnel conversion, acquisition cost, and leading indicators tied to outcomes.

Funnel AnalysisKPIsLeading Indicators
Transport for London
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Handle Incomplete or Inconsistent DataEasy

Explain how to assess and clean incomplete or inconsistent data before analysis.

Data WranglingCase WhenQuality
Transport for London
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Common Pitfalls in Experiment Results
Hard

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

PeekingNovelty EffectSample Ratio Mismatch
Transport for London
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Using Data to Influence Decisions
Easy

Share how you used data to shape a business decision, including the analysis, recommendation, and outcome.

User ResearchUser NeedsValue Proposition
Transport for London
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Data Quality in ETL Pipelines
Easy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQuality
Transport for London
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Correlation Versus Causation in Analysis
Easy

Explain why correlated customer behaviors do not by themselves prove a causal effect, and how you would tell the difference.

CorrelationHypothesis TestingCausal Inference
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Design Feature Drift Monitoring System
Hard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel Serving
Transport for London
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