I applied through university. I interviewed at Citadel
Interview
First round phone interview, mix of coding and technical questions. Interviewer was extremely unwilling to offer any guidance or help and made the process pretty uncomfortable. rejected after this first round even though I answered most questions correctly.
Interview questions [1]
Question 1
Sample points randomly from a unit sphere. How do you get uniform variables?
sample random standard normal variables X1, X2, X3 for the 3 coordinates of the point in the sphere. Then (X1,X2,X3)/sqrt(X1+X2+X3) = (X1,X2,X3) is uniform.
What is the variance of each of these uniform variables?
I applied through a recruiter. I interviewed at Citadel
Interview
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.
Interview questions [1]
Question 1
X,Y and Y,Z positive correlated. What can we say about X,Z
I applied through a recruiter. I interviewed at Citadel
Interview
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.
Interview questions [1]
Question 1
If you have a dataset with many features, what methods can you used to reduce the dimension?
