The weirdest Data Scientist Interview I have ever had!!! The company should really ask the questions related to the data science domain instead of asking something unrelated to a Data Scientist position, but a production line engineer position. The interviewer was not professional at all. No explanation for the question, and the question is like opening the back door for anyone with an industrial or hardware engineering degree and shutting the door for people who have other non-engineering quantitative backgrounds. However, not a single word in the JD was covered in the interview. I went over other people's interviews at this company on Glassdoor, and I assumed the business-related question could be something like "designing a model to predict the wafer yield percentage". This is not true! He asked something you will never know, NO statistics, NO ML, NO DL, NO AI, and even no product case. And the position was described as "You need to stay on the production line and design experiments to examine which machine has a problem every morning". Thus, don't be cheated by the JD, this is just a job named "Data Scientist" but actually something else.