Post #2403

✅Top Data Analytics Interview Questions & Answers📊💡 📍1. What is Data Analytics? Answer: The process of examining raw data to find trends, patterns, and insights to support decision-making. 📍2. What is the difference between Descriptive, Predictive, and Prescriptive Analytics? Answer: ⦁ Descriptive: Summarizes historical data. ⦁ Predictive: Uses data to forecast future outcomes. ⦁ Prescriptive: Provides recommendations for actions. 📍3. How do you handle missing data? Answer: Techniques include deletion, mean/median imputation, or using models to estimate missing values. 📍4. What is a SQL JOIN? Name different types. Answer: Combines rows from two or more tables based on a related column. Types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN. 📍5. How do you find duplicate records in a dataset using SQL? Answer: Use GROUP BY with HAVING COUNT(*) > 1 on the relevant columns. 📍6. What is a pivot table and why is it used? Answer: A tool to summarize, aggregate, and analyze data dynamically. 📍7. Can you explain basic statistical terms such as mean, median, and mode? Answer: Mean is average, median is middle value when sorted, and mode is the most frequent value. 📍8. What is correlation and how is it different from causation? Answer: Correlation measures relationship strength between variables, causation implies one causes the other. 📍9. What visualization tools are you familiar with? Answer: Examples include Tableau, Power BI, Looker, or Matplotlib. 📍🔟 How do you communicate findings to non-technical stakeholders? Answer: Use clear visuals, avoid jargon, focus on actionable insights. 💡Pro Tip: Show strong problem-solving skills, clarity in explanation, and how your analysis impacts business decisions. ❤️Tap for more!