2) A. 10 ropes, each one has one red end and one blue end. Each time, take out a red and a blue end, make them together. Repeat 10 times. The expectation of the number of loops. B. 10 ropes, no color. All the other remains the same.
Quantitative Researcher Interview Questions
4,854 quantitative researcher interview questions shared by candidates
Do you know Bezout's theorem?
Why add l2 penalty to linear regression.
Where in the earth or a sphere, you can return to the same place once you walk 1 mile to south, 1 mile to east and 1 mile to north?
If you are playing tennis and are at deuce with your rival, how would you choose to proceed? There are two options: keep playing deuce rule until you or your rival wins. Or you play 3 mini points rule, who win 2 points wins the game. Assume you winning rate is 0.7 i.i.d at each point, which rule would you pick?
What can we deal with OLS when high dimension, high correlation and some other flaws in data ?
Given three bowls, one with two blue balls, one with two red balls, and one with a red ball and a blue ball, what is the probability of pulling a blue ball from the same bowl given that you have already pulled one blue ball from that bowl?
expectation of max value of two dices
gambling question, whether it makes sense to gamble, if the chances are very small. Calculate the odds someone will take the grand prize if one million people goes, and odds are 1 in 1 million for each entry.
What does a distribution with a maximal variance look like which is only defined between 0 and 1? Give the proof.
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