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.
I applied online. The process took 3 weeks. I interviewed at Lubrizol in Sept 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 (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.