What do you understand by the selection bias? What are its various types?
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Can you explain root cause analysis?
What is advantage of using apply family of functions in r? How do you use lambda in python?
How do you treat colinearity?
What is selection bias and why does it matter?
Define power analysis?
What is meant by sampling? Explain some sampling methods that you know?
Explain the difference between a test set and a validation set?
What are the differences between data science, machine learning, and artificial intelligence?
Explain interpolation and extrapolation?
Define the unit test with PyUnit?
How will you handle missing data ?
What is cart and chaid? How is bagging different from boosting?
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