✅ Top Data Analytics Interview Questions with Answers – Part 1 🧠📈

1️⃣ What is the difference between Data Analytics and Data Science?
Data Analytics focuses on analyzing existing data to find trends and insights.
Data Science includes analytics but adds machine learning, statistical modeling predictions.

2️⃣ What is the difference between structured and unstructured data?
• Structured: Organized (tables, rows, columns) – e.g., Excel, SQL DB
• Unstructured: No fixed format – e.g., images, videos, social media posts

3️⃣ What is Data Cleaning? Why is it important?
Removing or correcting inaccurate, incomplete, or irrelevant data.
It ensures accurate analysis, better decision-making, and model performance.

4️⃣ Explain VLOOKUP and Pivot Tables in Excel.
• VLOOKUP: Searches for a value in a column and returns a value in the same row from another column.
• Pivot Table: Summarizes data by categories (grouping, totals, averages).

5️⃣ What is SQL JOIN?
Combines rows from two or more tables based on a related column.
Types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN.

6️⃣ What is EDA (Exploratory Data Analysis)?
It’s the process of visually and statistically exploring datasets to understand their structure, patterns, and anomalies.

7️⃣ Difference between COUNT(), SUM(), AVG(), MIN(), MAX() in SQL?
These are aggregate functions used to perform calculations on columns.

💬 Tap ❤️ for Part 2