Given a revenue transaction table that contains user_id, timestamp, and revenue, how would you find the third purchase of every user?
Daten Interview Questions
79,486 daten interview questions shared by candidates
Nothing difficult. Some people found difficult the questions about how to get along with colleagues and how to create a good relationship or break the ice.
What is probability of getting one pair of card from 52 deck of cards? How would you improve work hours?
given a table massenger_sends, date | ts | sender_id | receiver_id| message_id | has_reaction Q1) how many unique conversation threads are there ? note that there are threads that sender_id and receiver is inverse. this should be one thread
For a given array count combination of pairs of (x,y) whose sum is N.
They asked me to do a Excel Test, without telling me beforehand of it.
Mapreduce questions
How many high schools that people have listed on their profiles are real? How do we find out, and deploy at scale, a way of finding invalid schools?
We have a product that is getting used differently by two different groups. What is your hypothesis about why and how would you go about testing it?
How would you explain a confidence interval to a non-technical audience?
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