Scientist Ii Interview Questions

705 scientist ii interview questions shared by candidates

The only "classic" interview question I got was, "how would you handle a coworker who you knew was wrong about something important?" Other than that, they were interested in exploring the extent of my skill set and what kind of person I am – they wanted to make sure I would be a good fit for the team.
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Senior Scientist II/III

Interviewed at AbbVie

3.9
Dec 4, 2015

The only "classic" interview question I got was, "how would you handle a coworker who you knew was wrong about something important?" Other than that, they were interested in exploring the extent of my skill set and what kind of person I am – they wanted to make sure I would be a good fit for the team.

Data Science Interview (I only remember 8/9 questions): 1. What is cross-validation, where it is used, how do you do it correctly? 2. What are the differences between supervised and unsupervised algorithms? 3. What are examples of structured vs unstructured data? 4. What is multi-collinearity, why is it bad and how do we deal with it? 5. What is data normalization and what are the reasons behind doing it? 6. How would you handle NaNs and outliers? 7. Describe the life-cycle of a data science project 8. What are various evaluation metrics in machine learning and how would you choose between each one of them? Coding Interview: 1. Print all numbers between 1 and n, omitting multiples of 5 and 7. 2. Variant of the maximum number overlapping intervals problem 3. Write a program to compute the TF-IDF scores of all tokens in a given corpus of documents Behavioral Interview: Typical questions that you can find online, nothing unexpected Data Science Interview Detailed discussion of my past projects Mini Data Science Project I was given some data and asked to explore the dataset and fit a model to predict a certain target on future data points. A simple regression problem. I was given 1,5 hours.
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Data Scientist II

Interviewed at Expedia Group

3.7
May 8, 2021

Data Science Interview (I only remember 8/9 questions): 1. What is cross-validation, where it is used, how do you do it correctly? 2. What are the differences between supervised and unsupervised algorithms? 3. What are examples of structured vs unstructured data? 4. What is multi-collinearity, why is it bad and how do we deal with it? 5. What is data normalization and what are the reasons behind doing it? 6. How would you handle NaNs and outliers? 7. Describe the life-cycle of a data science project 8. What are various evaluation metrics in machine learning and how would you choose between each one of them? Coding Interview: 1. Print all numbers between 1 and n, omitting multiples of 5 and 7. 2. Variant of the maximum number overlapping intervals problem 3. Write a program to compute the TF-IDF scores of all tokens in a given corpus of documents Behavioral Interview: Typical questions that you can find online, nothing unexpected Data Science Interview Detailed discussion of my past projects Mini Data Science Project I was given some data and asked to explore the dataset and fit a model to predict a certain target on future data points. A simple regression problem. I was given 1,5 hours.

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