Can you explain difference between data modeling and database design?
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You are creating a report for user content uploads every month and observe a sudden increase in the number of upload for the month of November. The increase in uploads is particularly in image uploads. What do you think will be the cause for this and how will you test this sudden spike?
Why we need ggplot?
How many people are using Facebook in California at 1.30 PM on Monday?
What is skewed distribution & uniform distribution?
What is logistic regression in data science?
Can you enumerate the various differences between supervised and unsupervised learning?
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?
Define a/b testing?
What prior knowledge is required to become data scientist?
Python is enough for data science ?
Discuss decision tree algorithm?
When underfitting occurs in a static model?
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