Data Scientist Mock Interview
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Practice Real Data Scientist Interview Questions
Technical
Explain the bias-variance tradeoff
Technical
How do you handle imbalanced datasets?
Technical
Write a SQL query to find the second highest salary
Technical
What is the difference between L1 and L2 regularization?
Technical
How would you detect fraudulent transactions?
Technical
Explain Random Forest vs Gradient Boosting
Technical
Design an A/B test for a new feature
Technical
How do you evaluate a recommendation system?
Behavioral
Tell me about a challenging data project you worked on
Technical
What is your approach to feature selection?
Key Skills Evaluated
Machine Learning
Statistics & Probability
SQL & Databases
Python (pandas, scikit-learn)
Data Visualization
A/B Testing
Feature Engineering
Model Evaluation
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