Explain types of statistical data?

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You are about to get on a plane to Seattle, you want to know whether you have to bring an umbrella or not. You call three of your random friends and as each one of them if it's raining. The probability that your friend is telling the truth is 2/3 and the probability that they are playing a prank on you by lying is 1/3. If all 3 of them tell that it is raining, then what is the probability that it is actually raining in Seattle.

0 Answers   Facebook,

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What is linear optimization?

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What are the different performance metrics for evaluating Uber services?

0 Answers   Uber,

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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.

0 Answers   Facebook,

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How to check the frequency distribution of a categorical variable?

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How will you decide whether a customer will buy a product today or not given the income of the customer, location where the customer lives, profession and gender? Define a machine learning algorithm for this.

0 Answers   Amazon,

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What is back propagation?

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State some use cases where Hadoop MapReduce works well and where it does not.

0 Answers   WalMart,

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How will you define the number of clusters in a clustering algorithm?

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I have a string “contact@dezyre.com”. Which string function can be used to split the string into two different strings “contact@dezyre” and “com” ?

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Can you explain collaborative filtering?

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