Post #2475

✅Top Data Analytics Interview Questions with Answers – Part 2🧠📊 8️⃣ What is data normalization? It’s the process of scaling data to fit within a specific range (like 0 to 1) to improve model performance or consistency in analysis. 9️⃣ What are KPIs? Key Performance Indicators – measurable values used to track performance against objectives (e.g., revenue, conversion rate, churn rate). 🔟 What is the difference between INNER JOIN and LEFT JOIN? • INNER JOIN: Returns records with matching values in both tables. • LEFT JOIN: Returns all records from the left table and matched ones from the right (NULLs if no match). 1️⃣1️⃣ What is a dashboard in data analytics? A visual representation of key metrics and data points using charts, graphs, and KPIs to support decision-making. 1️⃣2️⃣ What are outliers and how do you handle them? Outliers are data points far from others. Handle them by: • Removing • Capping • Using robust statistical methods • Transformation (e.g., log) 1️⃣3️⃣ What is correlation analysis? It measures the relationship between two variables. Values range from -1 to 1. Closer to ±1 means stronger correlation. 1️⃣4️⃣ Difference between correlation and causation? • Correlation: Two variables move together. • Causation: One variable *causes* the other to change. 1️⃣5️⃣ What is data storytelling? It’s presenting insights from data in a compelling narrative using visuals, context, and recommendations. 💬Tap ❤️ for Part 3