Q: What are the assumptions of linear regression Q: N people handshake probability problem
Sr Data Analyst Interview Questions
3,099 sr data analyst interview questions shared by candidates
I've already mentioned in the process.
Sorting a list Pandas operations
Y PCA, what’s SMOTE and other techniques to fix data imbalance , feature selection techniques
Scaling , model evaluation, parameters tuning
Different imputation techniques, to handle skewed data, to fix outliers
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Screening Round – SQL & Data Visualization: 1. Easy to medium SQL questions focused on filtering, joins, and aggregations. 2. What checks would you perform to ensure data quality and cleanliness? 3. How to compare two tables to confirm if they have the same data. 4. Given a table with one categorical and two numerical columns, how would you visualize it? 5. What chart would you use to analyze correlation? SQL (Live or HackerRank format) 1. Table: Cust_visit(transaction_id, transaction_date, customer_id, total_amount, total_unit) Question: Identify premium customers who spent at least $300 and had at least 2 transactions in the past 3 months. 2. Tables: transactions(transaction_date, customer_id, product_id, sale) products(product_id, product_name, department) Question: Identify cross-department customers who have purchased from every department in the products table. 3. Tables: shipments(shipment_date, shipment_id, package_type, warehouse_id, customer_id, num_items, country) returns(return_id, return_date, customer_id) Question: Find the number of customers who had both a shipment and a return in the last 30 days. Final Round – Behavioral Focused on real-world experience: 1. TMAY 2. What types of analysis do you work on 3. What kinds of dashboards have you built - Follow-up questions around tools, business goals, and challenges
Open ended questions mostly based on how relevant your professional history is
Las típicas: ¿Por qué Holaluz? ¿Experiencias relevantes con el puesto? ¿Explica tu código? ¿Cual sería tu recomendación final respecto al caso de negocio?
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