Given a table containing date, post_id, relationship (e.g. Friend, Group, Page), interaction (like, share etc.) and a table containing poster id and post id, calculate: how many likes were made on friend posts yesterday
Data Scientist Interviews
Data Scientist Interview Questions
In a data scientist interview, expect employers to ask questions that assess your data modeling, problem-solving, and programming skills. Be prepared to answer general questions that test your knowledge of statistics and data science. You should also be ready to answer open-ended questions that test your creativity, communication skills, and formal education in data modeling and programming.
Top Data Scientist Interview Questions & How to Answer
Question 1
Question #1: Which data modeling techniques do you prefer and why?
How to answer
How to answer: Turning data into understandable and actionable information is a critical part of the data scientist's job. This question allows employers to understand your data modeling skills and background. List and discuss your preferred data modeling techniques, including benefits such as ease of use, flexibility, etc.
Question 2
Question #2: How would you detect bogus Instagram accounts used for scamming consumers?
How to answer
How to answer: Questions like this one allow an employer to test your problem-solving skills. When answering open-ended questions such as these, feel free to ask clarifying questions and use whiteboards to demonstrate your coding and diagramming skills. Share your thought process as you work through the problem.
Question 3
Question #3: Describe circumstances that require a list, tuple, or set in Python.
How to answer
How to answer: Interviewers will use questions such as this one to test your Python programming skills. Review Python basics such as lists, tuples, and sets before your interview. You should be able to explain when and how each tool is used by data scientists.
54,361 data scientist interview questions shared by candidates
Interviewer asked me a question related to strings that required recursive dynamic programming algorithm.
Basic SQL (don't remember specif question)
Our teams have developed an algorithm to detect spams and classify them at the bottom of the newsfeed. How to check if it works? If it's profitable?
How to analyze the network on Facebook,
I'm not allowed to share
How to identify close friends on social media?
Using a hypothetical schema from the portal product, identify the number of unique active users for a given country on a given day.
Q: Saying FB has only Comment and Like. How you would build an experiment to check if other emotions bottom can be added? (care, sad exc.). How you would build an A/B test?
SQL - joins, group by, date manipulation Business case - a mix of open ended questions framed like "how would you see if xyz is a good idea" and more specific questions about metric movements and experimentation
Viewing 1691 - 1700 interview questions
See Interview Questions for Similar Jobs
Data EngineerAnalytics ConsultantQuantitative ResearcherMachine Learning ScientistResearch ScientistMachine Learning EngineerData ScienceAnalytics ManagerBusiness Intelligence AnalystData Mining EngineerData AnalystQuantitative AnalystData ModelerStatistical Modeling AnalystData ConsultantComputational BiologistStatistical ConsultantModeling EngineerData Mining Analyst