Discover the top Data Science Interview Questions and answers from beginners to advanced, curated to get your first or next level Data Scientist job.
In data science, you analyzedatasets. Datasets consists ofcases, which are the entities you analyze. Cases are described by theirvariables, which represent the attributes of the entities. The first important question you need to answer when you start a data science project is what exactly is ...
with over 250,000 page views. For 2017, KDnuggets Editors bring you 17 more new and important Data Science Interview Questions and Answers. Because some of the answers are quite lengthy, we will publish them in 3 parts over 3 weeks. This is part 1, which answers the 6 questions...
Data Science Puzzles-Brain Storming/ Puzzle Questions asked in Data Science Job Interviews 1) How many Piano Tuners are there in Chicago? To solve this kind of a problem, we need to know – How many Pianos are there in Chicago? How often would a Piano require tuning? How much time doe...
Next up on these Data Structure interview questions, you have to understand a commonly asked question. 28. What is the use of dynamic Data Structures? Dynamic data structures provide users with a lot of flexibility in terms of the provision of data storage and manipulation techniques, which can...
Top data science questions and answers for 2018: How would you approach a categorical feature with high-cardinality? Answer to: How would you approach a categorical feature with high-cardinality? × What would you do to summarize a Twitter feed?
Advanced data science-related questions General questions General questions are usually posed at the start of the interview and help break the ice a little. 1. “Tell me about yourself.” Despite its being a straightforward prompt, “Tell me about yourself” can be challenging to answer concisely...
Want to know more about Data Science? Click here 2. What is wrong with this query? SELECT Id, TrialDate FROM Payments GROUP BY Id; Answer:So the question was wrong in this query we are selecting two columns Id and trialdate from the payments table and we’re seeing grouped by ID. Wh...
Get ready for your Python data science interview with these essential interview questions. Learn the most important concepts and techniques in data science.
Another way of asking this question is "Is a random forest a better model than a decision tree?" And the answer is yes because a random forest is an ensemble method that takes many weak decision trees to make a strong learner. Random forests are more accurate, more robust, and less ...