Why do you need a for loop? How do you do for loops in python and r?
What is cluster sampling in data science?
What is the k-means clustering method?
What are essential skills and training needed in data Science?
What is a z test?
What is the advantage of performing dimensionality reduction before fitting an svm?
How is data modeling different from database design?
Explain how to merge data frames in R?
You are given two tables- friend_request and request_accepted. Friend_request contains requester_id, time and sent_to_id and request_accepted table contains time, acceptor_id and requestor_id. How will you determine the overall acceptance rate of requests?
What is meant by Random Forest Classifier?
If you had to choose between the programming languages r and python, which one would you use for text analytics?
How do data scientists code in r?
How to solve multi-collinearity?
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