Suppose you come forward with a usability recommendation, and the engineers counter that with, “All the usage data we have from millions of people suggest that is not a problem.” How would you respond?
Data Researcher Interview Questions
14,854 data researcher interview questions shared by candidates
1. code the n term of Fibonacci, using iteration, then use recursion only, then use recursion and memorization. What is the time complexity and space complexity for all three cases. 2. Linear regression of X and y, X is n-dimensional and y is 1-dimensional, how would beta, standard error of beta, r2, and t-stat of beta change if you duplicate the data. Can you explain the results intuitively? 3 London has p probability of rain. You have 3 friends, they have 2/3 probability of telling truth, and 1/3 probability lying. Suppose all friends tell you rain, what is the probability it rains? 4. Leetcode
I may fill some phone interview questions, maybe not.
Are you able to work independently and what do u expect from ur line manager
A, B and C are time series and the following rhos represent their correlation coefficients. rho(A,B)=0.7, rho(B,C)=0.8, what is rho(A,C)? Why the correlation matrix is positive semi-definite?
You keep rolling a fair die with 6 sides. What is the average number of rolling to obtain consecutive six 6s for the first time?
How to generate a gaussian distribution with rand()
Give you a fair die, how to create a event with probability 1/7
There is a unit cube with internal mirror faces. A ray is emitted into the cube from one vertex, reflects off four faces (without touching vertices or edges), and stops at the opposite vertex from which it started. What is the minimum possible distance the ray travels? The answer should be decimal format approximated to 4 digits of precision, i.e. format a.bcd as in 1.234.
Nine fair coins are tossed, what is the probability of an odd number of heads landing?
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