WorldQuant Research Analyst Interview Questions | Glassdoor.co.in

# WorldQuant Research Analyst Interview Questions

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## Research Analyst Interview

Declined Offer
Neutral Experience
Average Interview

Application

I applied through college or university. The process took 4+ weeks. I interviewed at WorldQuant (New York, NY (US)) in February 2018.

Interview

The process is standardised: online test and consequent 5 interviews ( 3xResearch and 2xStrategy/Research Directors)
Test with two parts 40 and 20 questions each. The time for the first part question is 2-4min and a second part question is up to 7 minutes. Sometimes you have to choose the answer, sometimes you must type it.
Each phone interview is of about 45 mins, with a 10min general discussion and 2-3 math/coding questions.
All focused on Problem Solving, Combinatorics, Algo plus general career discussion on cultural fit, delivering tasks etc. on interviews.

- Simple math problems
- Coin Problems: Unbiased and Biased.
- Probability problems
- Statistics, like "find expectation of ...".
- Programming in pseudocode, Basic algorithm like "what will variable x be equal to after this code is executed".

Preparation:
1. Heard on the street
2. Online teasers
3. Glassdoor research
4. Relevant job questions: Alpha, Smart Beta strategies etc.

Interview Questions

• If |a-M|<=c and |b-M|<=d, which of the statements is sufficient to imply that |a-b|<e?   1 Answer
• A vector X of 100 real numbers has a mean value of 14. A second vector Y of 100 real numbers has a mean value of 40. A third vector Z is constructed by picking 100 numbers from X or Y at random and multiplying each by 2. A forth vector W is constructed by picking the remaining 100 numbers of X and Y and multiplying each by 2. What is the sum of all elements in Z+W.   2 Answers
• The population of desolate, remote planet is kept alive by a life support system. The population quadruples every 54 years, but the life support system capacity can only be doubled every 54 years. If the initial population is 2 people and the initial life support system has capacity for 16384 people, how many years will pass before the population reaches the capacity of the support system?   4 Answers
• When flipped a biased coin has a probability of 0.9 for heads. You get \$1 for heads and loose \$10 for tails, what is your expected wealth after 10 tosses?   2 Answers
• First player tosses perfect dice 2017 times. Second - 2016 times. What is probability that the first got strictly more odd numbers that the second one?   2 Answers
• Stock fluctuated everyday by 5%, up or down, with same likelihood. Assuming zero interest, friction, and dividends what strategy is the best over 100 days.   1 Answer
• We cut zero-one interval into 6 parts by dealing the 5 separator points uniformly and independently from zero-one interval. What is the probability that all six pieces are shorter than half?   Answer Question
• Two points are chosen uniformly and independently on a line of length of 60. What is average expected distance between them?   3 Answers
• Find optimal algo on max and average on consecutive groups (1000's): 1-1000, 2-1001 .... etc.   1 Answer
• Find the maximum of two numbers without using if-else or any other comparison operator.   1 Answer
• Miner in a cave with three different paths. First one leads for 3h to exit, second - 4 hours to start and third - 6 hours to start. Assuming miner does not know, which path was taken last time, how much time needed to escape the cave?   Answer Question
• You need to forecast the number that will be drawn from a continues uniform distribution between and 60. You will be charged 3 dollars for every unit overestimated and 1 dollar for every unit underestimated. No charge if the number is forecasted correctly. What number to forecast to minimize the cost?   Answer Question
• Two ferries at the same time on opposite sides of a river move at constant but different speeds. First meet at 300m from left, second time after the turn and 200m from the right side. How wide is the river?   1 Answer
• Mark a point randomly inside the circle of radius 1 meter. Let D is the distance from the point to the centre if the circle. Observe the distribution of d. Where the median is located?   1 Answer
• Consider a random permutation of numbers 1,…,2017. What is the variance of the number of its fixed points (ie numbers which are not moved by permutation)?   1 Answer
• What is the value of the integral of the function f(x)=exp(-x/2)cos(x) taken zero to infinity?   3 Answers
• Ant is sitting in a vertex of a right parallelepiped with edges 2,3,2. What is the length of the shortest path it can take to the opposite vertex.   1 Answer

## Research Analyst Interview

No Offer

Interview

I was shortlisted based on CV from college after which we were subjected to an online Quantitative round which tested our mathematical skills and comprised around 60 questions with each question having individual timers.

Interview Questions

2.

## Research Analyst Interview

Accepted Offer
Positive Experience
Difficult Interview

Application

The process took 1 day. I interviewed at WorldQuant (Bengaluru) in December 2010.

Interview

On campus Placement, written test, 1:1 interview, phone interview

Interview Questions

• You have 9 digits 1-9. Partition them into two sets S1 and S2. Make a number (any) using the digits of partition S1. Call this x. Similarly do it for S2. Call it y. the product p=xy. What should the numbers x and y be to maximize p.   4 Answers
• You are given 2 eggs.
* Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100 th floor.Both eggs are identical.
* You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
* Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process   7 Answers

## Research Analyst Interview

Declined Offer
Positive Experience
Difficult Interview

Application

I applied through college or university. The process took 4+ weeks. I interviewed at WorldQuant in December 2011.

Interview

one written test, 6-7 oral interviews

Interview Questions

Reasons for Declining

choose to pursue PhD

4.

## Research Analyst Interview

No Offer

Interview

some probability questions.

Interview Questions