Data Scientist Interview Questions in United States |

Data Scientist Interview Questions in United States


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I thought about this a little differently from a non-bayes perspective. It's raining if any ONE of the friends is telling the truth, because if they are telling the truth then it is raining. If all of them are lieing, then it isn't raining because they told you that it was raining. So what you want is the probability that any one person is telling the truth. Which is simply 1-Pr(all lie) = 26/27 Anyone let me know if I'm wrong here!

Here's another perspective on how to answer a question like this: Bring an umbrella. It's Seattle - if it's not raining right now, it probably will be by the time you get there.

Find the second largest element in a Binary Search Tree

16 Answers

Common statistical and python related questions. 1) How do you proof that males are on average taller than females by knowing just gender or height. 2) What is a monkey patch 3) How do you get the count of each letter in a sentence

7 Answers

Write a function that takes in two sorted lists and outputs a sorted list that is their union.

10 Answers

generating a sorted vector from two sorted vectors.

3 Answers

How do you test whether a new credit risk scoring model works? What data would you look at?

2 Answers

The interviewer asked details about k-means clustering

1 Answer

The hacker rank challenge had questions about basic python/pandas skills.

1 Answer

What is A/B testing

1 Answer

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

2 Answers
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