Lead Data Scientist Interview Questions

399 lead data scientist interview questions shared by candidates

I won't share the question in specific, but the most difficult question was something that has no answer as of yet (from a scientific point of view) - when I responded "wait, but that question has no answer", they followed up with "well, if we come up with one, we can write a paper about it". This, I believe, is a great spirit to have in general.
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Lead Research Scientist

Interviewed at OutSystems

3.8
Sep 10, 2019

I won't share the question in specific, but the most difficult question was something that has no answer as of yet (from a scientific point of view) - when I responded "wait, but that question has no answer", they followed up with "well, if we come up with one, we can write a paper about it". This, I believe, is a great spirit to have in general.

Coding questions: 1) Merge two sorted linked lists and return it as a sorted list. 2) Given an integer array nums of 2m integers,group these integers into n pairs (p 1 , q 1 ), (p 2 , q 2 ), ..., (p m , q m) such that the sum of min(p i , q i ) for all i is maximized. Return the maximized sum. SQL questions: Table 1 (column_names) Member Name Vehicle Miles Year 3) What is the average number of miles driven by Members after 2015? 4) What is the percent of miles driven on each vehicle by each member? Table 2 (column_names) Make Mileage (mpg) 5) Using the second table, what is the expected fuel consumption by each member?
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Lead Data Scientist

Interviewed at Humana

3.6
Jan 10, 2022

Coding questions: 1) Merge two sorted linked lists and return it as a sorted list. 2) Given an integer array nums of 2m integers,group these integers into n pairs (p 1 , q 1 ), (p 2 , q 2 ), ..., (p m , q m) such that the sum of min(p i , q i ) for all i is maximized. Return the maximized sum. SQL questions: Table 1 (column_names) Member Name Vehicle Miles Year 3) What is the average number of miles driven by Members after 2015? 4) What is the percent of miles driven on each vehicle by each member? Table 2 (column_names) Make Mileage (mpg) 5) Using the second table, what is the expected fuel consumption by each member?

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