derive the formula for the variance of OLS from scratch
Quantitativer Entwickler Interview Questions
10,159 quantitativer entwickler interview questions shared by candidates
suppose you have 500 search algorithm, how to compare them?
Find the minimum of x^x
What is e^{i\pi}
What is the number of ways to reach n-th step of a stair if one can jump up either 1 step or 2 steps?
If W is standard Brownian Motion, for what values of n is W^n still a martingale?
In a set of cereals, there are 4 kinds of coupons. A child wants to collect all the 4 kinds of coupons. How many boxes in average should he buy?
Get uniform distribution of number between 1 and 7 by rolling dice
n people standing in a row with all of them having different heights. Expected position of the tallest guy.
1. Let x～Uniform(0,1) and y～Uniform(0,2) be independent random variables, what\'s expectation of |x−y|?. 1point 3acres 论
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