WNS Data Analyst Interview Questions
The questions to prepare for a WNS Data Analyst interview. Questions from real interview reports rank first. Updated weekly.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
WNSAggregate monthly sales totals by product category using JOINs, GROUP BY, and date formatting.
WNSExplain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.
WNSFind the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarTests core ML concepts needed to interpret models and apply them responsibly.
WNSTests understanding of regression modeling workflow and core implementation steps in Python.
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Tests estimation and metrics reasoning for real-world data problems with limited information.
WNSTests metric selection, alignment to business goals, and understanding of measurement tradeoffs.
WNSEvaluates your guesstimation approach and assumptions for a real-world business question.
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