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Updated weekly · Last refresh Oct 17
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Westpac Group Data Analyst Interview Questions

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

6questions
~1htotal time
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1
Behavioral & LeadershipStart here. 4 questions · ~32 min
Working With Difficult PeopleMedium

Tests conflict resolution, influence without authority, and ownership when stakeholders make progress difficult.

Conflict ResolutionCommunicationbehavioral interviewWWestpac Group
Resume WalkthroughEasy

Tests ownership, prioritization, and communication through a concise walkthrough of resume projects.

achievementexperienceresumeWWestpac Group
Prioritizing Across Competing ProjectsMedium

Tests prioritization under pressure across multiple projects, including time management, stakeholder communication, and ownership of trade-offs.

time managementmultitaskingPrioritizationWWestpac Group
Explaining a Technical Concept ClearlyEasy

Tests communication, ownership, and stakeholder management when translating technical complexity into actionable business understanding.

Problem SolvingData Structurestechnical fundamentalsWWestpac Group
2
More topics2 questions · ~16 min
Difference Between WHERE and HAVING ClausesEasy

Explain the differences between WHERE and HAVING clauses in SQL and when to use each.

JoinsData WranglingAggregationsWWestpac Group
Handling Missing and Dirty SQL DataMedium

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

Data WranglingCase WhenQualityWWestpac Group

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Rolling 30-Day Transaction AverageMedium
Practice
Practice drill

Calculate each user's rolling 30-day average transaction volume using PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationSStarlingWWestpac GroupBBMO Financial Group
Join Types and SemanticsMedium
Practice
Practice drill

Demonstrate how INNER JOIN and LEFT JOIN differ when matching customers to account records.

null handlingJoinssqlWWestpac GroupIdfc First Bank
SQL to Flag Partner Count MismatchesMedium
Practice
Practice drill

Compare partner-reported and internal daily counts, then flag discrepancies and show the prior comparison status.

JoinsData WranglingCase WhenGoogle
The finish line: interview-readyComplete all 6 questions plus 3 hands-on drills to finish this plan.