Real Data Science Interview Questions

Below is a list (in no particular order) of real interview questions I have either asked, been asked, or saw asked in a real interview. While everyone has their own take on interview advice, mine is pretty clear cut. Answer the question, nothing more nothing less. Don’t get caught up in the trap of trying to add too much detail. Unless specifically asked for more detail, the interviewer more often than not just wants to make sure you have a grasp of the concepts.

1. Explain the difference between Regression and Classfiers:

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2. What does ETL stand for?

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3. What is the difference between a data warehouse and a transactional database

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4. Name 3 ETL tools

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5. Explain Probability vs Odds

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6. What are the basic elements or parts for writing SQL queries?

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7. Explain supervised versus unsupervised machine learning

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8. Explain the difference between a left join and an inner join

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9. What is ensemble modeling?

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10. What is a confusion matrix?

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11. What is DDL vs DML

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2 thoughts on “Real Data Science Interview Questions

  1. Pingback: Real Data Science Interview Questions: Question 1 – Analytics4All

  2. Pingback: Data Science Interview Questions: Parts of a SQL Query – Analytics4All

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