What is a Z-test? When would you use a Z test over a T test?
Daten Interview Questions
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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
Why are manhole covers round?
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.
MySQL query (join, group by)
How to calculate the average number of people in one family member, after survey by a call?
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