State the difference between a validation set and a test set?
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What is selection bias?
What is a recommender system?
Why do you want to work as a data scientist?
What is interpolation and extrapolation?
What is underfitting?
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?
Which database is best for data science?
What will be the output of runif (7)?
Can you write the formula to calculate r-square?
What is the goal of the clustering?
What is the importance of data cleaning in analysis?
How and by what methods data visualizations can be effectively used?