Data Science Interview Questions

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

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Can you do regression with Decision trees?
Paras Doshi asked 3 years ago • 
798 views1 answers0 votes
What is the relation between precision-recall and Roc curve (True-Positive-Rate/False Positive Rate)?
MockInterview asked 3 years ago • 
1386 views3 answers0 votes
Walk me through your steps for implementing a linear regression using Python
Paras Doshi asked 3 years ago • 
780 views1 answers0 votes
What is Xgboost and what are the applications?
MockInterview asked 3 years ago • 
762 views1 answers0 votes
What is principal component analysis? Explain the sort of problems you would use PCA for. Also explain its limitations as a method
MockInterview asked 5 years ago • 
3435 views2 answers0 votes
Explain L1 Manhattan distance and L2 Euclidean distance metrics and some of their applications
MockInterview asked 3 years ago • 
756 views1 answers0 votes
Is high-dimensional a blessing or curse? why?
MockInterview asked 3 years ago • 
613 views1 answers0 votes
Why would you want to use Regularization?
MockInterview asked 5 years ago • 
924 views2 answers0 votes
Can you give me an overview of Linear regression? When will you use Lasso & Ridge Regression?
MockInterview asked 3 years ago • 
774 views1 answers0 votes
What are the drawbacks of linear model? Are you familiar with alternatives (Lasso, ridge regression)?
MockInterview asked 5 years ago • 
812 views1 answers0 votes
Explain Bayesian A/B Testing method
MockInterview asked 3 years ago • 
576 views1 answers0 votes
if there's a sufficiently large dataset with enough variance and you asked k-means clustering algo to come back with 6 clusters, will it ever fail?
MockInterview asked 3 years ago • 
649 views1 answers0 votes
Case study: How would you investigate a Drop in User Engagement?
MockInterview asked 5 years ago • 
9758 views2 answers0 votes
What is the difference between running an A/B test through Frequentist methods vs Bayesian methods?
MockInterview asked 3 years ago • 
527 views0 answers0 votes
When would you use random Forest vs logistic regression for binary classification problem?
Paras Doshi asked 3 years ago • 
526 views0 answers0 votes
[Probability] We have two options for serving ads within Newsfeed : 1 – out of every 25 stories, one will be an ad 2 – every story has a 4% chance of being an ad For each option, what is the expected number of ads shown in 100 news stories? If we go with option 2, what is the chance a user will be shown only a single ad in 100 stories? What about no ads at all? (Asked in Facebook Interview)
MockInterview asked 5 years ago • 
3030 views2 answers0 votes
What is K-means? How can you select K for K-means?
Paul asked 5 years ago • 
746 views2 answers0 votes
What is P-Value?
MockInterview asked 5 years ago • 
662 views1 answers0 votes
How can we choose a "good" K for K-means clustering?
MockInterview asked 5 years ago • 
733 views1 answers0 votes
Which Clustering methods you are familiar with? Walk me through the methodology.
MockInterview asked 5 years ago • 
524 views1 answers0 votes
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