Why is data cleaning essential in data science?


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How will you explain JOIN function in SQL to a 10 year old ?

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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?

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What are essential skills and training needed in data Science?

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what the aim of conducting a/b testing?

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