If a jar has X red balls and Y blue balls, what is the minimum number of draws that is necessary to ensure that you have one ball of each color?
Data Scientist Interview Questions
Data Scientist Interview Questions
In un colloquio per Data scientist, ti verranno poste domande volte a verificare le tue capacità di data modeling, risoluzione di problemi e programmazione. Preparati a rispondere a domande di carattere generale che valutano la tua conoscenza della statistica e della scienza dei dati. Dovresti inoltre prepararti a rispondere a domande aperte mirate a testare la tua creatività, le tue doti comunicative e la tua formazione nella programmazione e modellazione dei dati.
Domande tipiche dei colloqui per Data scientist e come rispondere
Domanda 1: Quali tecniche di data modeling preferisci e perché?
Domanda 2: Come rilevi gli account Instagram fasulli utilizzati per raggirare i consumatori?
Domanda 3: Descrivi quali circostanze richiedono una lista, una tupla o un set in Python.
54,189 data scientist interview questions shared by candidates
Technical Interview Questions: What are the assumptions for Linear Regression? What is a Random Forest? How is a decision tree built?
When can you start?
What’s the probability of a type 1 error. What happens when the sampling distribution is altered (e.g. filtering out all values below the mean) and how does it effect type 1 errors.
Are you okay with going out and collecting samples?
Write a program in Python to calculate tax if Salary and Tax Brackets are given as list in the form [ [10000, .3],[20000, .2], [30000, .1], [None, .1]]. You don’t know in the beginning how many tax brackets are there. You have to test for all of them.
Given an event-level table of interactions between pairs of users (note that there aren't duplicates in one day for one pair of users), for each possible number of "people interacted with" find the count for that group in a given day (i.e. 10 people interacted with only one person, 20 with 2, etc.).
What is the expectation of the variance?
How can Facebook figure out when users falsify their attended schools?
Measure difference between two vectors
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