Shell Data Scientist Interview Questions and Answers

Q1. All analysis questions, missing values imputation, graph plotting, ML Mathematics and few python language questions.
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Q1. Basic data science and statistics interview questions along with their mathematical understanding.
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Q1. Data science questions with mathematical understanding
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Q1. STAR type questions
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Q1. Cfd questions like forward difference scheme and backward difference scheme.
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Q2. In which direction the fluid flows in a vertical pipe when the pressures at two vertical locations are given.
Ans. 
The direction of fluid flow in a vertical pipe depends on the pressure difference between two vertical locations.
• Fluid flows from high pressure to low pressure.

• If the pressure at the lower location is higher than the pressure at the upper location, the fluid will flow downwards.

• If the pressure at the upper location is higher than the pressure at the lower location, the fluid will flow upwards.

• The magnitude of the press...read more
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Q1. About Work experience
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Q2. How do you handle a negative outcome?
Ans. 
I handle negative outcomes by analyzing the root cause and identifying potential solutions.
• I remain calm and objective to avoid making hasty decisions.

• I review the data and identify the root cause of the negative outcome.

• I brainstorm potential solutions and evaluate their feasibility.

• I implement the best solution and monitor its effectiveness.

• I use the experience as a learning opportunity to improve future outcomes.
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Q3. What are the factors that demotivates you in work?
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Q1. Questions based on Bernoullis principle.
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Q2. How to find if a point is inside or outside of a regular polygon?
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Q3. Coding questions by the specialist in US.
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3 questions on various problems based on arrays and matrices.

Reverse a binary tree and few other technical questions

Q1. Data structure and Oops concepts were asked
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Q1. Technical round on projects that we have worked on and questions around that
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Q1. General HR questions
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Q1. More of like a general conversation with the center manager
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2 question :

1. Find the longest common subsequence in 2 strings
2. find the 5th highest revenue from the table in last 28 days in a particular region

I was given a list of book, genre of books and books and rating of books . All list was of equal length n.

There were 2 methods which need to be implemented
1. get highest rating of book by genre . if rating are same then in lexographical order
2. update book rating by book name

Q1. These questions were basic
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Q2. There were lots of imaginative situation given and then I was asked to say what I would do in those situation
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