Quantitative Analyst Internship Interview Questions

10,159 quantitative analyst internship interview questions shared by candidates

1. 100 students, make survey cheat/not cheat, student toss a coin, if head, tell truth, if tail, toss again, if Head then yes, if tail then no. 30 students answer yes, Q: how many student cheated? 2. Given an array, use bootstrap method to get the var of mean (I used R). 3. Can you write 2 in one line within function? ( so use apply() )
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Quantitative Analyst

Interviewed at Google

4.4
Apr 20, 2016

1. 100 students, make survey cheat/not cheat, student toss a coin, if head, tell truth, if tail, toss again, if Head then yes, if tail then no. 30 students answer yes, Q: how many student cheated? 2. Given an array, use bootstrap method to get the var of mean (I used R). 3. Can you write 2 in one line within function? ( so use apply() )

How many digits in (100)^10 Strategy for winning one dollar for every heads in 100 throws of coin toss. What question would you ask if you could ask one question to the person who knows the entire seq of the 100 coin tosses
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Quantitative Trader

Interviewed at Jane Street

4.4
Jul 9, 2015

How many digits in (100)^10 Strategy for winning one dollar for every heads in 100 throws of coin toss. What question would you ask if you could ask one question to the person who knows the entire seq of the 100 coin tosses

There is a big line of people waiting outside a theatre for buying tickets. The theatre owner comes out and announces that the first person to have a birthday same as someone standing before him in the line gets a free ticket. Where wil you stand to maximise your chance?
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Quantitative Analyst

Interviewed at Morgan Stanley

3.9
Dec 12, 2010

There is a big line of people waiting outside a theatre for buying tickets. The theatre owner comes out and announces that the first person to have a birthday same as someone standing before him in the line gets a free ticket. Where wil you stand to maximise your chance?

How long would a tunnel from NYC to San Fran. would be if you dig it through the earth as short as possible? If you traveled directly on the surface? What is you confidence bound (length +/-)? You are waiting for a bus which it takes a round trip of 10 minutes to complete (starts again when it completes one tour). What is your expected waiting time if you arrive at a random time? (uniform from 0 to 10, so 5min). Then, an extension: There is an ice cream shop somewhere on the bus route. The bus driver flips a fair coin every time it passes by it and f "H", spends 10 minutes to eat ice cream and then continue the tour. What is your expected waiting time now? What is the coin is biased?
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Quantitative Trader

Interviewed at Jane Street

4.4
Mar 3, 2013

How long would a tunnel from NYC to San Fran. would be if you dig it through the earth as short as possible? If you traveled directly on the surface? What is you confidence bound (length +/-)? You are waiting for a bus which it takes a round trip of 10 minutes to complete (starts again when it completes one tour). What is your expected waiting time if you arrive at a random time? (uniform from 0 to 10, so 5min). Then, an extension: There is an ice cream shop somewhere on the bus route. The bus driver flips a fair coin every time it passes by it and f "H", spends 10 minutes to eat ice cream and then continue the tour. What is your expected waiting time now? What is the coin is biased?

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