WNS Data Analyst Interview Questions
The questions to prepare for a WNS Data Analyst interview. Questions from real interview reports rank first. Updated daily.
Aggregate monthly sales totals by product category using JOINs, GROUP BY, and date formatting.
WNSFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
WNSStandardize missing observation fields with fallback values, missingness flags, and ordered output.
WNSTests understanding of regression modeling workflow and core implementation steps in Python.
WNSTests core ML concepts needed to interpret models and apply them responsibly.
WNSTests estimation techniques and ability to turn assumptions into a reasonable metric.
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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