Data Science Intern applicants have rated the interview process at Lubrizol with 3.5 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 50% positive. To compare, the company-average is 62.5% positive. This is according to Glassdoor user ratings.
Candidates applying for Data Science Intern roles take an average of 21 days to get hired, when considering 2 user submitted interviews for this role. To compare, the hiring process at Lubrizol overall takes an average of 25 days.
Common stages of the interview process at Lubrizol as a Data Science Intern according to 2 Glassdoor interviews include:
Group panel interview: 50%
Phone interview: 50%
Here are the most commonly searched roles for interview reports -
I applied online. The process took 3 weeks. I interviewed at Lubrizol (Hazelwood, England) in May 2019
Interview
Two stages: first is a technical interview with 1 person on the Data Science team, with questions mostly about statistical models, and the second is a very typical competency interview with 2 people.
I applied online. The process took 3 weeks. I interviewed at Lubrizol in Sep 2025
Interview
There will be two interviewers. One is data scientist, the other is senior data scientist. Whloe time is 1 hour. Data scientist will start with some basic questions from CV, including some details and also ask why company.
Interview questions [1]
Question 1
They ask what if n=30 but predictors=100. How to deal with this problem and asked tons of details.
I applied online. The process took 3 weeks. I interviewed at Lubrizol in Oct 2022
Interview
I applied online in early October and was invited to a technical interview with two data scientists about three weeks later. The overall vibe wasn't great as my interviewers looked visibly tired and unenthusiastic. It brought my confidence down.
Interview questions [1]
Question 1
What would you do if there were a few outliers in your data, versus if 20% of your data were outliers? Explain collinearity and why it's bad to a nontechnical audience.