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Adastra Group Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 11 questions + 2 drills · ~113 min
2
Pipelines7 questions · ~59 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityAAdastra Group
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3
A/B Testing & Experimentation5 questions · ~42 min
Common Pitfalls in Experiment ResultsHard

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

PeekingNovelty EffectSample Ratio MismatchAAdastra Group
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4
Metrics3 questions · ~25 min
First Checks for Metric DropsEasy

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisAAdastra Group
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5
Coding11 questions · ~93 min
Core Principles of OOPEasy

Explain the four core OOP principles and how they improve software design and maintainability.

RecursionHash TablesArraysAAdastra Group
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6
Sales & Customer4 questions · ~34 min
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7
More topics9 questions · ~76 min
Statistical Significance in Hypothesis TestingEasy

Explain what statistical significance means and why it matters when interpreting experimental or analytical results.

Hypothesis TestingData AnalysisStatistical SignificanceAAdastra Group
Define Metrics for New FeaturesMedium

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueAAdastra Group
Why You Want to Work HereEasy

Tests motivation and your ability to articulate a clear fit for the Research Analyst role.

Product-Market FitCompetitive AnalysisAAdastra Group
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