You have a table with appID, eventID, and timestamp. eventID is either 'click' or 'impression'. Calculate the click through rate. Now do it in for each app.
Data Scientist Interview Questions
33,408 data scientist interview questions shared by candidates
Common statistical and python related questions. 1) How do you proof that males are on average taller than females by knowing just gender or height. 2) What is a monkey patch 3) How do you get the count of each letter in a sentence
Coding test: moving average Input 10, 20, 30, 10, ... Output: 10, 15, 20, 17.5, ...
What has the larger expected value, sampling a number between 1 and n from a uniform distribution and multiplying it by itself, or sampling two numbers and multiplying them.
A table has a column with full names(e.g. 'Tom Hardin'). write a python code to get distinct first names(i know its super easy in sql)
is technical test score necessary to crack all rounds of interview
If revenue is down 1% and time spent is up 2%, what do you infer/ decide?
We at Facebook would like to develop a way to estimate the month and day of people's birthdays, regardless of whether people give us that information directly. What methods would you propose, and data would you use, to help with that task?
Facebook sees that likes are up 10% year over year, why could this be?
What is the probability of drawing two cards (from the same deck of cards) that have the same suite?
Viewing 41 - 50 interview questions
See Interview Questions for Similar Jobs
Data EngineerAnalytics ConsultantStatistical Modeling AnalystMachine Learning EngineerData AnalystResearch ScientistData ModelerAnalytics ManagerBusiness Intelligence AnalystData ScienceMachine Learning ScientistQuantitative AnalystQuantitative ResearcherData Mining EngineerStatistical ConsultantData Mining AnalystComputational BiologistModeling EngineerData Consultant