The first round was ~30 minutes of phone interview. The interviewer asked 2~3 questions, mainly about probability, combinatorics and math. I didn't manage to pass the first round so these are all I know.
Preguntas de entrevista [1]
Pregunta 1
Q: Integrate xlogx.
Q: Put the numbers 1~1000 around a circle in order. Start at 1, you delete the number 1, 3, 5, ... and carry on this pattern of deleting numbers alternatively until there's only one number left. Determine that number.
Solicité el puesto a través de un captador. Acudí a una entrevista en Citadel
Entrevista
After the initial recruiter call, I moved on to a 45-minute virtual interview. The session was a mix of LeetCode-style algorithmic problems, along with some probability and statistics questions. The coding portion wasn't too difficult—I'd say it was around the Medium level.
Preguntas de entrevista [1]
Pregunta 1
X,Y and Y,Z positive correlated. What can we say about X,Z
Solicité el puesto a través de un captador. Acudí a una entrevista en Citadel
Entrevista
Reach out directly without oa, give some basic probability and stats question, also ask about something on the resume. the interviewer is pretty nice, and answered all questions, still got rejected lol
Two phone screens, one was a Leetcode Easy coding problem along with general ML questions. Second asked some probability statistics questions. Last one was about my research and a general feeler about my knowledge of economics and current events.
Preguntas de entrevista [1]
Pregunta 1
If you have a dataset with many features, what methods can you used to reduce the dimension?
