Sr Data Scientist Interview Questions

3,383 sr data scientist interview questions shared by candidates

1, why and education and working backgroup fit for this position? 2, what is overfitting and how to avoid? 3, what is the difference between correlation and causation? and how do you determine it? 4, please describe the steps you would take to conduct a hypothesis test and an example of when one would be useful.
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Senior Data Scientist

Interviewed at General Motors (GM)

3.5
Apr 5, 2022

1, why and education and working backgroup fit for this position? 2, what is overfitting and how to avoid? 3, what is the difference between correlation and causation? and how do you determine it? 4, please describe the steps you would take to conduct a hypothesis test and an example of when one would be useful.

A submarine starts at a depth of 30 meters below the surface. Each round, you roll a fair six-sided die (values 1–6), and the submarine moves upward by the number rolled (in meters). You have exactly 7 rounds to move. What is the probability that, after 7 rolls, the submarine reaches exactly the surface (depth 0)?
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Senior Data Scientist

Interviewed at StackAdapt

3.5
Apr 26, 2025

A submarine starts at a depth of 30 meters below the surface. Each round, you roll a fair six-sided die (values 1–6), and the submarine moves upward by the number rolled (in meters). You have exactly 7 rounds to move. What is the probability that, after 7 rolls, the submarine reaches exactly the surface (depth 0)?

What is MLE? Difference between Random forest and Xgboost model How do you caliberate an ML model ? Explain regularization Explain bias variance trade off How do you handle class imbalance? Some deeper questions on projects
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Sr Data Scientist

Interviewed at Amazon

3.5
Oct 22, 2024

What is MLE? Difference between Random forest and Xgboost model How do you caliberate an ML model ? Explain regularization Explain bias variance trade off How do you handle class imbalance? Some deeper questions on projects

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