Product sense part 5 : (fraud case) You got the results - how do you know if 1% improvement is good or bad
Science Interview Questions
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What is a Z-test? When would you use a Z test over a T test?
Say the DS team came up with a spam detection algorithm, what metrics would you use to measure success?
How can we tell if two users on Instagram are best friends? (answer question) Ok, how can we use this algorithm in the product?
What is the difference between Z test and T test?
the probability of getting a pair, a straight in 52 cards
1-Programming: Given data on Facebook members friending/defriending each other on Facebook, find out whether a given pair of members are currently friends. 2- Statistics: Very basic questions on treatment effects under various sampling schemes. 3-Research Design Question: How would you test whether having more friends now increases the probability that a Facebook member is still an active user after 6 months?
How to choose emotions in like/dislike systems and any problems in the A/B test.
How would u manage a person of more experience than you who is working under you?
Then, he asked what if the cost of false positive is 0?
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