Data Interview Questions

132,723 data interview questions shared by candidates

Most of the questions were regarding my work experience so far. And a few logic questions like what is the angle between the hours hand and minutes hand when the time is 3:15; How do I identify which switch corresponds to which light bulb when the switches are in one room and the bulbs are in another and given that I can enter the room with bulbs only once.
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Product Data Analyst

Interviewed at BlackRock

3.7
Oct 16, 2012

Most of the questions were regarding my work experience so far. And a few logic questions like what is the angle between the hours hand and minutes hand when the time is 3:15; How do I identify which switch corresponds to which light bulb when the switches are in one room and the bulbs are in another and given that I can enter the room with bulbs only once.

SQL question: 1 table with player_id, log in date, and 2 other fields and was asked to calculate first day retention rate. First day retention rate is defined as the player who log in the 2nd straight day, after the first ever time they log into game.
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Data Engineer

Interviewed at Amazon

3.5
May 8, 2021

SQL question: 1 table with player_id, log in date, and 2 other fields and was asked to calculate first day retention rate. First day retention rate is defined as the player who log in the 2nd straight day, after the first ever time they log into game.

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