What recruiters look for: SQL, Excel, Python/R, Power BI/Tableau proficiency. Understanding of business metrics and data interpretation. Experience with data cleaning, visualization, and reporting.Goal: Check hands-on technical skills. Common formats: SQL test: Joins, aggregations, window functions, CTEs, subqueries. Excel test: Pivot tables, lookups, formulas, charts. Python test (sometimes): Data cleaning with pandas, basic stats. Case-based questions: Given a dataset, extract insights or calculate KPIs. 📘 Example question: “Given a table of transactions, find the top 3 products by revenue in 2023.”