Most questions can be found in one of the classical quant interview books, I knew most of them.
Quantitative Analyst Intern Interview Questions
10,159 quantitative analyst intern interview questions shared by candidates
We have n switches, each has probability p_i being on and 1-p_i being off. What's the probability of C or more switches being on. What if C is a uniform random variable [0, n]
The number generator question and questions about my experience
Mathematical proof about a statistical rule
2 coding question; function to write square root and given n, generate all permutations of 1:n. Background questions about resume and multicollinearity concept discussion
Main thing was working with normal probabilities and solving a equation system. The more complex point was N(1,1) + N(1,1) != N(2,2) but calculating the error propagation of the standard deviation.
Describe a previous research experience.
You start at the origin and you can go either up/down or left/right. How far do you get in N steps. If there are two boundaries, what is the probability that you reach one before the other
The stats question was about drawing black and red balls from an urn under certain conditions and coming up with a distribution for each outcome, the leetcode question was about finding pairs of elements that sum to a particular value in a sorted list
"How would you scale your solution to work for a large, global service?"
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