Dell Data Scientist Interview Questions and Answers

Q1. Explain K-Means algorithm
Ans. 
K-Means is a clustering algorithm that partitions data into K clusters based on similarity.
• Divides data points into K clusters based on distance from centroid

• Iteratively updates centroids to minimize within-cluster variance

• Requires specifying number of clusters K beforehand

• Example: Grouping customers based on purchasing behavior
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Q1. How do you select the appropriate learning algorithm for a problem?
Ans. 
Selecting the appropriate learning algorithm involves considering the problem's characteristics and requirements.
• Understand the problem's nature, such as classification, regression, clustering, etc.

• Consider the size of the dataset and the computational resources available.

• Evaluate the complexity of the relationships within the data.

• Experiment with different algorithms and compare their performance using metrics like ac...read more
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Q1. Questions to assess compatibility with team culture
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Q1. Your past experience related questions
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Q1. Role related questions
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Q1. 1. Basics of Python 2. Basics of ML like supervised and unsupervised learning
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I was asked to solve various problems (your typical algorithm and data structure subjects), as well as explain the various projects I worked on in my most recent position.

Divide candidates in a group of around 15 people, and put you through different activities such as role play exercises to measure your communication and team working skills.

Q1. Exptected salary
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Q2. What do you expect for work
Ans. 
I expect challenging projects, opportunities for growth, collaborative team environment, and work-life balance.
• Challenging projects that allow me to apply my data science skills and learn new techniques

• Opportunities for growth and advancement within the company

• Collaborative team environment where I can share ideas and work together towards common goals

• Work-life balance to ensure I can perform at my best both profession
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Topic was joining and calculating

Q1. Why Microsoft? What products do you use?
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Q1. Discussion on projects written in resume and related problems. Some stats
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Q1. Why you are interested in working for clipchamp at Microsoft/
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Q2. How your career goals align with this role?
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