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Data Analysis and Insight Generation Questions

Ability to convert raw data into clear, evidence based business insights and prioritized recommendations. Candidates should demonstrate end to end analytical thinking including data cleaning and validation, exploratory analysis, summary statistics, distributions, aggregations, pivot tables, time series and trend analysis, segmentation and cohort analysis, anomaly detection, and interpretation of relationships between metrics. This topic covers hypothesis generation and validation, basic statistical testing, controlled experiments and split testing, sensitivity and robustness checks, and sense checking results against domain knowledge. It emphasizes connecting metrics to business outcomes, defining success criteria and measurement plans, synthesizing quantitative and qualitative evidence, and prioritizing recommendations based on impact feasibility risk and dependencies. Practical communication skills are assessed including charting dashboards crafting concise narratives and tailoring findings to non technical and technical stakeholders, along with documenting next steps experiments and how outcomes will be measured.

MediumTechnical
0 practiced
You suspect the analytics pipeline undercounts mobile users due to a tracking SDK bug. Explain how you would detect sampling bias using available data (device metrics, server logs), design an analysis to estimate the magnitude of undercounting (backfill comparisons, control groups), and propose corrective steps and validation checks to ensure accuracy going forward.
MediumTechnical
0 practiced
Design a one-screen analytics dashboard that summarizes product health and active A/B experiments for a search product to be used by PMs and engineering leads. List which metrics, visualizations, alert indicators, and interaction elements (filters, date ranges, experiment drill-down) you'd include and justify each choice. Explain trade-offs between detail and clarity.
EasyTechnical
0 practiced
For a product metrics dashboard shown to product managers, list the best chart types for these tasks: 1) show trend over time for conversion rate, 2) show distribution of session length, 3) show funnel conversion from view->click->purchase, 4) compare metric by country segments, 5) show correlation between time-on-site and revenue. For each chart explain why it helps and one design tip to keep the message clear for non-technical stakeholders.
HardTechnical
0 practiced
Explain how survival analysis methods (Kaplan-Meier estimator and Cox proportional hazards model) can be applied to retention and churn analysis. Describe how to prepare the data, define time-to-churn and censoring, interpret survival curves and hazard ratios, and list the assumptions you must validate for Cox models.
HardTechnical
0 practiced
You trained a model and SHAP shows feature A has high importance, but stakeholders suspect A is not causal but a proxy. Explain how to interpret SHAP/feature importance correctly, common pitfalls when features are correlated, and propose analyses (partial dependence, conditional permutation importance, causal diagrams, domain experiments) to investigate whether A is a proxy for another causal driver.

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