Vedantu Data Scientist Interview Questions and Answers

Q1. Technical questions mostly around sql, project based and few theoretical questions on python
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Q1. This was one of the most grilled interview i have given, require moderate level of sql understanding, was asked to share screen and solve it , also i had show how it is working then basic questions of py...read more
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Q1. Was asked basic HR questions
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Q1. Asked about the Statistics concepts hypothesis,pvalue,mean,meadian.mode,normaldistrubution?
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Q2. Sql joins questions based on three tables, complex joins
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Q1. The first round was a basic telephonic interview. Then simple basic SQL questions and some question based on Normalisation and DBMS were asked.
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Q1. This was the toughest Data Analyst Interview I have faced till now. Interview was of 1 hr. Required higher level of SQL understanding. Asked to share screen and then solve SQL queries. Question based on jo...read more
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Q1. Question based on Window Functions in sql
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Q2. Order of execution
Ans. 
Order of execution refers to the sequence in which operations are carried out in a program or system.
• Execution starts from the top of the program and moves downwards.

• Operations within parentheses are executed first.

• Multiplication and division are executed before addition and subtraction.

• Functions are executed when they are called.

• Control structures like loops and conditionals affect the order of execution.
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Q1. Write a sql query to find out different routes for a airline. Table has two columns which are destination and source
Ans. 
Use a SQL query to find different routes for an airline based on source and destination columns in a table.
• Use a SELECT statement to retrieve the distinct combinations of source and destination.

• Use the DISTINCT keyword to ensure only unique routes are returned.

• Order the results by source and destination for easier analysis.
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Q2. Situational questions based on Business KPI
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Q1. Simple discussion on the role and company culture
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Q1. Case study question
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Q1. Basic Discussion on relocation and interest in joining the company.
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Q1. Ask some questions about my self and previously what i did and some questions related to company...
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Q2. Tell me about your self
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Q3. What are the skills you have
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Q4. Why are you choose this company
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They share some apptitude questions and communication related questions to answer them...

Take a one topic from my self to discuss with other to communicate....how easily

Verbal, logical, Quantative test

Q1. Self introduction
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Basic project to fetch github user details and show it.

Q1. What are promises?
Ans. 
Promises are commitments made by one party to another, ensuring that a certain action or outcome will be delivered.
• Promises involve a commitment to fulfill a specific task or obligation

• They are often made between individuals, organizations, or parties in a contract

• Breaking a promise can lead to trust issues and negative consequences

• Examples include promising to meet a deadline, keep a secret, or repay a debt
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Q2. What is the use of cors.
Ans. 
CORS (Cross-Origin Resource Sharing) is a mechanism that allows resources on a web page to be requested from another domain outside the domain from which the resource originated.
• CORS is used to enable secure cross-origin requests in web browsers.

• It allows servers to specify who can access their resources.

• CORS is implemented using HTTP headers like Access-Control-Allow-Origin.

• It helps prevent cross-site request forgery ...read more
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Q3. Output questions based on hoisting, closures and promises
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Question was moderate.based on logical reasoning and math.

Coding test question based on sql and python.