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Updated weekly · Last refresh Oct 27

JOHN LEONARD Data Analyst Interview Questions

The questions to prepare for a JOHN LEONARD Data Analyst interview. Questions from real interview reports rank first. Updated daily.

24questions
~3htotal time
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1
SQL & Data ManipulationStart here. 9 questions + 3 drills · ~102 min
Joining Strings and IntegersMedium
Recently asked

Tests practical SQL skills for type handling and data preparation in join operations.

sqlJOHN LEONARD
Solving an Unclear SQL ProblemHard
Recently asked

Tests your ability to drive clarity and solve ambiguous SQL problems.

ClarityJOHN LEONARD
Handling Missing ValuesMedium
Recently asked

Tests statistical and practical approaches to missing data without distorting analysis.

missing valuesdata cleaningdata integrityJOHN LEONARD
Choosing the Right VisualizationMedium
Recently asked

Tests judgment in selecting visualizations that match the data and the decision context.

Data Analysistechnical skillsdata visualizationJOHN LEONARD
Cleaning Messy DatasetsMedium
Recently asked

Tests practical data cleaning methods and attention to edge cases and quality.

data cleaningtechnical skillsdata integrityJOHN LEONARD
Professional Python and SQLMedium
Recently asked

Tests hands-on proficiency with core data languages used to analyze and transform data.

sqltechnical experiencepythonJOHN LEONARD
Writing SQL for Membership and ClaimsMedium
Practice
Practice drill

Deduplicate Centene membership and claims records, then calculate daily member and claim totals.

data cleaningData Analysissql queriesCentene
Top Routes With Delivery DelaysMedium
Practice
Practice drill

Calculate average delivery delays by route and return the five routes with the highest averages.

JoinsData AnalysisGroup ByFedEx
Writing a Complex SQL QueryMedium
Practice
Practice drill

Write and explain a query that summarizes analyst query performance by dataset and ranks analysts by success rate.

JoinsData Analysiscomplex queriesAutodeskPCS Global TechGro Intelligence
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2
Behavioral & Leadership15 questions · ~120 min
Data Visualization Tools OverviewMedium
Recently asked

Assesses breadth of visualization tooling and ability to communicate quickly and clearly.

experiencedata visualizationJOHN LEONARD
Experience With Analytical ToolsMedium
Recently asked

Assesses your hands-on experience with tools used for analytics and reporting.

experienceJOHN LEONARD
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The finish line: interview-readyComplete all 24 questions plus 3 hands-on drills to finish this plan.