Data Science Interview Questions

Welcome to MockInterview.co‘s Data Science Interview Questions library! (300+ questions & growing)

There are three things that you could do here:

  1. Prepare: You can browse through these questions set to prepare for your data science interviews.
  2. Ask questions: You are also invited to ask interview questions using the “Ask Question” button which you can find at the bottom of the question list.
  3. Post Answers: you can post your answers to get feedback from the community.

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Filter:AllUnanswered
[Facebook data engineer coding interview] remove duplicates from an array/list
Pythin asked 2 months ago • 
56 views0 answers0 votes
[Amazon interview] what is the difference between random forest vs cart tree; XGBoost vs RF?
MockInterview asked 6 months ago • 
202 views0 answers0 votes
[Amazon interview] What is a p-value? What are its shortcomings?
MockInterview asked 6 months ago • 
211 views0 answers0 votes
[Amazon Interview] What are the first 3 things you do when given a (clean) dataset and why?
MockInterview asked 6 months ago • 
218 views0 answers0 votes
[Amazon Interview] What are your strengths and weaknesses as a data scientist?
MockInterview asked 6 months ago • 
162 views0 answers0 votes
value-for-money
ken asked 11 months ago • 
336 views0 answers1 votes
Reverse engineer 'Home pricing' algorithm. (Think Zillow's Zestimate or Redfin's home estimate tools)
MockInterview asked 1 year ago • 
467 views0 answers0 votes
What is the difference between margin of error and confidence interval?
Paras Doshi asked 2 years ago • 
640 views0 answers0 votes
What is standard error? Explain with example.
Paras Doshi asked 2 years ago • 
611 views0 answers0 votes
What's a probability distribution? Explain any 3 probability distribution?
Paras Doshi asked 2 years ago • 
471 views0 answers0 votes
What is effect size? Explain where you have applied this statistical concept to solve a business problem.
Paras Doshi asked 2 years ago • 
487 views0 answers0 votes
What is the difference between running an A/B test through Frequentist methods vs Bayesian methods?
MockInterview asked 2 years ago • 
380 views0 answers0 votes
When would you use random Forest vs logistic regression for binary classification problem?
Paras Doshi asked 2 years ago • 
381 views0 answers0 votes
What is your greatest professional accomplishment?
MockInterview asked 3 years ago • 
441 views0 answers0 votes
How would you design a software library to create production-level machine learning models efficiently?
MockInterview asked 3 years ago • 
468 views0 answers0 votes
If you are a Product Analyst on Self Driving Car Startup; What metrics would you track to analyze the success of this program? (asked in Google interviews)
MockInterview asked 3 years ago • 
502 views0 answers0 votes
How would use Analytics & Data Science to help Product Managers Identify what to build next?
Paras asked 4 years ago • 
405 views0 answers0 votes
An executive approaches you and explains they have this really interesting dataset that they believe can unlock amazing value and they need you to see what can be done with it. What do you do?
MockInterview asked 4 years ago • 
331 views0 answers0 votes
How can you prove that one improvement you’ve brought to an algorithm is really an improvement over not doing anything? Are you familiar with A/B testing?
MockInterview asked 4 years ago • 
359 views0 answers0 votes
Which of the following are you strongest in / most passionate about: exploratory data analysis, building data models & algorithms, running research experiments?
MockInterview asked 4 years ago • 
607 views0 answers0 votes
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