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Updated weekly · Last refresh Aug 30

DataZymes Data Analyst Interview Questions

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

22questions
~3htotal time
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1
SQL & Data ManipulationStart here. 9 questions + 3 drills · ~102 min
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityDataZymes
Ensuring Visualization IntegrityMedium

Tests your controls for correctness, consistency, and trustworthiness in BI dashboards and charts.

quality assurancedata accuracyDataZymes
Answering a Business QuestionMedium

Tests end-to-end analytical thinking from requirements through insights and communication.

methodologyDataZymes
Cleaning and Trend DiscoveryMedium

Tests your approach to data cleaning, preparation, and extracting trends from messy Excel data.

data cleaningExcelDataZymes
Missing Values and OutliersMedium

Tests data cleaning judgment and understanding of how treatment affects statistical validity.

data preprocessingdata cleaningdata integrityDataZymes
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
Finding Duplicate RecordsEasy
Practice
Practice drill

Find duplicate customer emails using GROUP BY and HAVING in PostgreSQL.

Group ByHavingAggregationsWestern DigitalBismartUniversity of Kansas Medical Center
Top Agents by Recovery Rate SQLMedium
Practice
Practice drill

Rank Paytm collection agents by last-month recovery rate using joins, aggregation, a CTE, and date filtering.

sql queryData Analysisperformance metricsPaytm
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2
Behavioral & Leadership11 questions · ~88 min
Explaining Resume Projects and TradeoffsEasy

Tests ownership and decision-making by probing how you explain project choices, tradeoffs, and your personal impact under changing constraints.

backgroundOwnershipself introductionDataZymes
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3
More topics2 questions · ~16 min
Choosing the Right MetricsMedium

Tests your ability to translate business goals into measurable KPIs for biotech and pharma analytics.

Data Analysismetric selectionDataZymes
ML and Statistics ConceptsMedium

Evaluates your understanding of core ML and statistical foundations used in analysis.

Machine LearningDataZymes

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