NDA SQL, Products, Experimentation
Data Science Consulting Interview Questions
40,365 data science consulting interview questions shared by candidates
How to count unique elements in a column of a table?
1. FB has hired raters to rate ads. 80% are careful rates and rate 60% of the ads as good and 40% as bad, 20% are lazy raters and rate 100% ads as good. What is the probability that an ad is rated good? Given that 3 ads have been rated as good, what is the probability that they were rated by a lazy rater? Given that n ads have been rated as good, what is the probability that they were rated by a lazy rater? You want to classify raters as careful/lazy, how would you do that using all the probabilities and ideas discussed above (open ended question)?
How have you dealt with stressful situations on the job in the past?
Take home challenge - they focus on delivery time, rigor of solution and beating a given score. On site - was as described, took about 3 hours and at the end had to present the approach, results and answer questions related to them.
What function in R allows you to select rows>
Likes/user and minutes spent on a platform are increasing but total number of users is decreasing. What could be causing this?
Write query to detect a certain bug (that the interviewer described) from this data?
What is the revenue by advertiser for the month of March? (From one table) What is the ROI for each advertiser for the same month? (Now there are two tables)
-Why do you want to work at Bayer? -How do you manage your work under pressure?
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