Data Scientist Interview Questions

33,424 data scientist interview questions shared by candidates

Bayes' Formular: Marbles: There are 30 red marbles and 10 black marbles in Urn #1. You have 20 red and 20 Black marbles in Urn 2. Randomly you pull a marble from the random urn and find that it is red. What is the probability that it was pulled from Urn #1
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Data Scientist

Interviewed at Zenefits

3.8
Dec 17, 2016

Bayes' Formular: Marbles: There are 30 red marbles and 10 black marbles in Urn #1. You have 20 red and 20 Black marbles in Urn 2. Randomly you pull a marble from the random urn and find that it is red. What is the probability that it was pulled from Urn #1

There are two players, A and B playing a game with a single fair coin. If the coin flips two heads in a row, then player A wins. If the coin flips a tails and then a heads right after each other, player B wins. The coin is flipped sequentially until either player A or player B wins, and the game is reset. Which player, if any, would you bet on and why?
avatar

Data Scientist

Interviewed at Upstart

3.9
Apr 21, 2020

There are two players, A and B playing a game with a single fair coin. If the coin flips two heads in a row, then player A wins. If the coin flips a tails and then a heads right after each other, player B wins. The coin is flipped sequentially until either player A or player B wins, and the game is reset. Which player, if any, would you bet on and why?

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