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?

0 Answers   Goldman Sachs,

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What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.

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Can you explain k-mean?

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What is the return type of the function ID?

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Explain principal components analysis with equations.

0 Answers   Uber,

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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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Explain data wrangling?

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What are decorators in Python?

2 Answers  

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What prior subject is required to become data analyst?

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Anaconda is a wikipedia programming language?

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How will you prove that the square root of 2 is irrational?

0 Answers   Goldman Sachs,

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Can you define linear regression?

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