Tell me about a time when you took a risk
Data Scientist Intern Interview Questions
40,238 data scientist intern interview questions shared by candidates
SQL: there is a table of time,post id, action and content. the action can be reported and the content is spam. another table of time,post id, user - of all posts were removed manually the question: What percent of yesterday's content views were on content that has been reported for spam and removed yesterday?
Why Facebook? What is probability of pulling a different color or shape card from a shuttled deck of 52 cards? A business sense question on how to improve a service and a sql query question given a table.
You're about to get on a plane to Seattle. You want to know if you should bring an umbrella. You call 3 random friends of yours who live there and ask each independently if it's raining. Each of your friends has a 2/3 chance of telling you the truth and a 1/3 chance of messing with you by lying. All 3 friends tell you that "Yes" it is raining. What is the probability that it's actually raining in Seattle?
Three friends in Seattle told you it's rainy. Each has a probability of 1/3 of lying. What's the probability of Seattle is rainy.
Alice and Bob take turns in rolling a fair dice. Whoever gets "6" first wins the game. Alice starts the game. What are the chances that Alice wins.
You are compiling a report for user content uploaded every month and notice a spike in uploads in October. In particular, a spike in picture uploads. What might you think is the cause of this, and how would you test it?
Last round is still left
What is your favorite formula?
find out k most frequent numbers from incoming stream of numbers one the fly.
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