How do you select the treatment groups' size in case of an A/B test.
Senior Data Scientist Interview Questions
3,390 senior data scientist interview questions shared by candidates
what is your background? what other projects have you worked in?
general ML questions and live coding in python.
Asked about why I wanted to join them
Most questions were related to machine learning models and algorithms. For example, Random forest, Xgb, difference between bagging and boosting, how different algorithms handle NA values etc.
It was related to ML, AI and solving business problem
Unable to provide the questions.
case interview was kind of different
She never showed up.
SQL questions 1.) inner join vs outer join 2.) Creating a new column based on condition on first column. 3.) Finding median value without using median function. 4.) Finding quartiles
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