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What is selection bias and why does it matter?


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More Data Science Interview Questions

A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?

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How do you do for loops in python and r?

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A certain couple tells you that they have two children, at least one of whom is a girl. What is the probability that they have two girls?

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You have two tables-the first table has data about the users and their friends, the second table has data about the users and the pages they have liked. Write an SQL query to make recommendations using pages that your friends liked. The query result should not recommend the pages that have already been liked by a user.

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How regularly must an algorithm be updated?

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What do you mean by the term linear regression?

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What is the best laptop for data science?

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