Motivation, Statistik, Maschinelles Lernen, Fallstudie
Data Interview Questions
132,942 data interview questions shared by candidates
They asked a lot of questions about my take-home project; in particular wanted to know about the reasons that I took the approach that I did. I could tell they were coming more from a statistical and economics background for the most part; while I'm more of an engineering and machine-learning hacker type standpoint. They also had a lot of "ambiguous" questions; by that, I mean questions about ambiguous business situations I might encounter in this position. Wanted to know how well I would do with ambiguous questions I might get from business leaders.
What is the difference between bagging and boosting algorithms
Tell me more about your previous experience? Did you work as data scientist? How many years of work experience you have ? About masters degree? where are you graduating from? do you need H1B in future
25 horse puzzle, 8 coins puzzle
In data scientist job, you can separate into three parts: Data Cleaning, Data Analysis, and Visualization. Which part would you prefer to do?
1. the ORDER BY command in SQL is automatically set in what format if you didn't set it? Ascending or Descending? Answer: Ascending 2. When you want to delete or add a column of a table in a database, what command you will use? Answer: ALTER 3. this question about about LEFT JOIN, they ask what command you want to use if you want to keep all the info of the left table? Answer: left join 4. You want to combine two column after removing two duplicates, use UNION or UNION ALL? Answer: UNION
Validate an IP Address. Multiple test cases given.
Given a string like 'abc', print out all the strings of combination of the same length as the original string. Like 'abc', 'acb', 'bca', 'bac', 'cab', 'cba'
Phone Interview: Intermediate level Python and SQL questions. 5 questions each for 30 minutes.
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