Google Data Scientist Interview Questions | Glassdoor

Google Data Scientist Interview Questions

Updated Dec 11, 2017
12 Interview Reviews

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12 Candidate Interview ReviewsBack to all Interviews

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Data Scientist Interview

Anonymous Interview Candidate
No Offer
Positive Experience
Average Interview

Interview

HR found me through LinkedIn. Scheduled a an informal phone talk to talk about my background and work interests for about 10 min.

They will have another tech interview and a onsite if you pass the tech interview.

This position at Mountain View now only hires PhDs.....

Interview Questions

Other Interview Reviews for Google

  1.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied through a recruiter. The process took 2 weeks. I interviewed at Google in November 2017.

    Interview

    This job is also called quantitative analyst. The are looking for Ph.D. student. The recruiter found me through Linked. After the informal phone interview, she arranged a video interview for me. The video interview asked tech questions.

    Interview Questions


  2. Helpful (1)  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. I interviewed at Google.

    Interview

    tech-phone interview. applied online and waited 3 days to get the email from HR to set up a screen interview. Then tech-phone interview. The whole process is very quick and their HR is very nice

    Interview Questions

    • 3 open questions including R code   1 Answer
  3. Helpful (2)  

    Data Scientist Interview

    Anonymous Interview Candidate in New York, NY
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied online. The process took 2 weeks. I interviewed at Google (New York, NY).

    Interview

    Asked about brain teasers at the first round. second round asked about non normal distributions and probabilities. The process was fairly fast and relatively non software technical. We did not have an exam on coding.

    Interview Questions

    • Explain a probability distribution that is not normal and how to apply that.   1 Answer

  4.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied online. The process took 4+ weeks. I interviewed at Google in December 2016.

    Interview

    Submit resume online, answer a questionnaire with about 20 questions. Then a HR arranged a phone interview and attached a review guide. I followed the guide for reviewing. But during the interview, most of questions are from my keys words in my resume. So understand and prepare explaining everything in your resume.

    Interview Questions

    • 1. Why use feature selection? If two predictors are highly correlated, what is the effect on the coefficients in the logistic regression? What are the confidence intervals of the coefficients?
      2. K- mean and Gaussian mixture model: what is the difference between K-mean and EM?
      3.How to decided k?
      4.When using Gaussian mixture model, how do you know it is applicable? (Normal distribution)
      4.If the labels are known in the clustering project, how to evaluate the performance of the model? In my project, I use adjusted rank index? But I forgot how it is defined.   1 Answer

  5.  

    Data Scientist Interview

    Anonymous Interview Candidate in Mountain View, CA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. I interviewed at Google (Mountain View, CA) in October 2016.

    Interview

    1. Talk to recruiter. Mentioned to read Google unofficial blog. found it useless for the interview but is actually useful for my current job.

    2. Then phone screen with a statistician using some shared google doc.

    3. Got rejection after one week.

    Interview Questions

    • You have a google app and you make a change. How do you test if a metric has increased or not?   2 Answers

  6.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Neutral Experience
    Difficult Interview

    Application

    I applied through an employee referral. I interviewed at Google.

    Interview

    Got an employee refer and the whole process took 1 month. First a phone screen by HR and then technical phone interviews. Then I was rejected. The interviewer was remote and cold.

    Interview Questions

    • Compared advantages and disadvantages of several programming languages   Answer Question

  7.  

    Data Scientist Interview

    Anonymous Employee in New York, NY
    Accepted Offer
    Positive Experience
    Difficult Interview

    Application

    I applied through an employee referral. The process took 2 weeks. I interviewed at Google (New York, NY) in October 2015.

    Interview

    I was contacted by a recruiter after a referral. I had one phone screen and then a take home challenge. The phone screen consisted of some very basic stats and CS questions. This was followed by a detailed take home challenge where I had to analyze a data set on google's internal data.

    Interview Questions

  8.  

    Data Scientist Interview

    Anonymous Interview Candidate in Los Angeles, CA
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied through college or university. The process took 1 day. I interviewed at Google (Los Angeles, CA) in February 2015.

    Interview

    It's an on campus interview. There were two rounds, one is about resume and machine learning questions, and the interviewer asked to implement some machine learning algorithm using pseudo code; the other is about some coding and algorithm questions.

    Interview Questions


  9.  

    Data Scientist Interview

    Anonymous Interview Candidate
    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied through a recruiter. I interviewed at Google in February 2014.

    Interview

    One recruiter reached out to me over LinkedIn. I was then handed off to another recruiter who performed a short phone screen. After that there was a longer phone interview with the leader of that particular team. The longer phone call took about an hour in total. They seemed to be trying to move the whole process along quickly.

    Interview Questions

    • There was a question about SQL joins, string parsing in R, some simple machine learning, as well as some general questions about particularly risky or creative things you have done.   Answer Question

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