Explain data munging or data wrangling?
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Explain the difference between a validation set and a test set?
What is churn?
What is a recommender system?
How do you understand by bias variance trade off?
Why is data cleaning essential in data science?
What is the salary for a data scientist?
What is back propagation and explain it’s working.
Explain how to merge data frames in R?
Which objects are iterated in python?
why is data cleaning important for analysis?
What does ITER () do in Python?
What is cluster sampling?