Top 50 Interview Questions for Data Analytics Roles

Landing a data analytics role requires both technical skills and the ability to communicate insights effectively.

SQL Questions

1. What is the difference between WHERE and HAVING?

WHERE filters rows before grouping, while HAVING filters groups after aggregation.

2. Explain different types of JOINs

• INNER JOIN: Returns matching rows from both tables
• LEFT JOIN: All rows from left table + matching from right
• RIGHT JOIN: All rows from right table + matching from left

Python/Pandas Questions

How do you handle missing data?

• Drop missing values
• Fill with mean/median
• Forward/backward fill

Practice these questions daily on LeetCode and HackerRank!