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Updated weekly · Last refresh Aug 30

PotomacWave Data Analyst Interview Questions

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

11questions
~1htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Power BI Dashboards with DAXMedium

Assesses ability to build decision-ready BI dashboards using Power BI and DAX for broad audiences.

daxdata visualizationpower biPotomacWave
Complex Queries in MS AccessMedium

Evaluates SQL query design and problem-solving for complex data retrieval in MS Access.

sqlPotomacWave
Automating with Excel VBA or M-QueryMedium

Assesses automation skills and practical impact of reducing manual effort through scripting or queries.

Data ManipulationAutomationPotomacWave
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
Top Users by Region QueryMedium
Practice
Practice drill

Rank the top 10 ResMed myAir users in each region using joins, aggregation, and ROW_NUMBER().

Data AnalysissqlResmed
SQL Missing Marks RuleEasy
Practice
Practice drill

Use GROUP BY and HAVING to exclude students missing marks in two or more subjects.

data cleaningsqlPayPal
2
Behavioral & Leadership3 questions · ~24 min
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3
More topics5 questions · ~40 min
Accuracy and Compliance Under DeadlinesMedium

Assesses prioritization, quality control, and compliance discipline under schedule pressure.

time managementAccuracyCompliancePotomacWave
Data Cleaning Across Inconsistent SourcesMedium

Assesses data quality methods for reliable integration across heterogeneous and conflicting datasets.

data integrationdata cleaningdata validationPotomacWave
Advanced Statistics with RMedium

Evaluates statistical analysis capabilities and appropriate use of programming for advanced analytics.

ProgrammingPotomacWave
Turning Patterns into StrategyMedium

Assesses analytical thinking and ability to influence strategy based on data-driven insights.

Data AnalysisPotomacWave
Data Governance for Sensitive InfoMedium

Tests understanding of governance practices for protecting sensitive data in federal consulting environments.

data managementPotomacWave

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