Bei einem Vorstellungsgespräch für Wissenschaftler wird von Ihnen Fachwissen und die nötige Erfahrung für die jeweilige Stelle erwartet. Häufig angesprochene Themen sind beispielsweise grundlegende statistische Methoden, Konzepte des maschinellen Lernens und Analyse von Fallstudien. Die befragende Person wird höchstwahrscheinlich auch Ihre Kommunikations- und zwischenmenschlichen Fähigkeiten beurteilen, die für eine effektive Arbeit im Team und das Einwerben von Drittmitteln unabdingbar sind.
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?
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.
Mostly case based questions intended to see my ability to reason through the problems the team was facing at the time of my interview. Also some more technical coding questions.
Statistical theory, case question
What would be your approach to check if the overall acceptance rate has decreased from 60% in may'17 to 30% in sep'17
Q1. SQL Given tables: employees(id, unixname,team,role,days_since_started) projects(id,name,....) commits(id,file_path,proj_id,auth_id,timestamp) Find the number of unique employees per project per month? Q2. Imagine you have a CSV file: john_doe,android,ios,infra bob_law,is,backend jane_doe,frontend ------------------------------ Containing,for each employee, a list of projects he/she works on Write a script/function/else that reads data from CSV file and creates a data structure that stores, for each project, a list of employees who work on it.
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