First round: tell me about your background, why are you interested in this position? Second round: How to figure out competitor's tipping pattern
Data Scientist Trainee Interview Questions
54,212 data scientist trainee interview questions shared by candidates
What is the bias-variance trade-off?
In a 52 cards game, you randomly draw 5 cards, then return 4 back to the dealer and you keep 1. The dealer will always know what card is in your hand. Can you tell me what strategy he used?
Questions about database and Machine Learning. The interviewer asked about my background in operations research and machine learning. Several programming questions with language of my choice.
What if you want to evaluate your model with respect to a system running on the client-side? How you are going to charge your client if your model is better than his system?
Take the integer 123 and convert it to 321. God forbid you use the most concise, correct solution, though. But hey, maybe I saved someone from this inane question since it's on full display on Glassdoor now.
The second question was trying to predict for 7 days. Follow up question was if u predict using the prediction u might accumulate errors.
Write a SQL query to count the number of unique users per day who logged in from both iPhone and web, where iPhone logs and web logs are in distinct relations.
How you will decide the number of clusters in k means?
How you will handle class imbalance problem? What are various approaches?
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