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Updated weekly · Last refresh Aug 30

Activision Data Scientist Interview Questions

The questions to prepare for a Activision Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 4 questions + 1 drill · ~45 min
7-Day Rolling DAU on FacebookMedium
Practice

Compute daily distinct active users and a 7-day rolling average using a CTE and window function.

Activision
7-Day Rolling Active UsersMedium
Practice

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsActivision
Rank Top SKUs and Forecast Next QuarterHard
Practice
Practice drill

Use window functions and CTEs to rank top SKUs by revenue and project next-quarter performance.

Data WranglingGroup ByAggregationsActivision
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2
A/B Testing & Experimentation4 questions · ~35 min
Primary vs Guardrail Metric ChoiceMedium

Choose a primary success metric and guardrails for a game experiment, then explain how that choice drives power, analysis, and ship decisions.

ExperimentationGuardrail MetricsA/B TestingActivision
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3
Metrics3 questions · ~26 min
Diagnose a Sudden DAU DropHard

Investigate whether an 8.2% DAU decline is driven by product breakage, logging issues, or normal seasonal patterns.

DAU/MAUDiagnosisTime SeriesActivision
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4
Machine Learning4 questions · ~35 min
Handling Imbalance in Churn ModelsMedium

Explain how to train and evaluate a churn model when churn is rare and standard accuracy is misleading.

Bias-Variance TradeoffModel EvaluationSupervised LearningActivision
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5
Product Sense3 questions · ~26 min
Metrics for a New Live-Ops EventMedium

Tests metric design, causal thinking, and risk management with guardrails.

Guardrail Metricsprimary metricsActivision
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6
Behavioral & Leadership13 questions · ~115 min
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7
More topics3 questions · ~26 min
Design Cold Start for RecommendationsHard

Design a recommendation system strategy for model cold start and new-user cold start, including serving, evaluation, and safe rollout.

Cold StartRetrievalTwo-Tower ModelsActivision
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesActivision
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The finish line: interview-readyComplete all 34 questions plus 1 hands-on drill to finish this plan.