NTT Data Data Scientist Interview Questions and Answers

Q1. Tell me about your self?
Ans. 
I am a data scientist with a background in statistics and machine learning, passionate about solving complex problems using data-driven approaches.
• Background in statistics and machine learning

• Experience in data analysis and visualization

• Strong programming skills in Python and R

• Ability to communicate complex findings to non-technical stakeholders
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Q2. What is maths and stats
Ans. 
Maths and stats refer to the study of mathematical concepts and statistical methods for analyzing data.
• Maths involves the study of numbers, quantities, shapes, and patterns.

• Stats involves collecting, analyzing, interpreting, and presenting data.

• Maths is used to solve equations, calculate probabilities, and model real-world phenomena.

• Stats is used to make informed decisions, draw conclusions, and test hypotheses.

• Both ma...read more
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Confusion matrix what are your job rolls explain me Gradient boosting algorithm?

Q1. I was asked to introduce myself . I was asked A/B testing
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Q2. ML use case implemented
Ans. 
Implemented a machine learning model to predict customer churn in a telecom company.
• Collected and cleaned customer data including usage patterns and demographics

• Used classification algorithms like Random Forest and Logistic Regression

• Evaluated model performance using metrics like accuracy, precision, and recall
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Q3. Gen AI use case implemented
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Q1. NLP and Computer Vision based Question were asked.
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Q1. General Questions on Machine Learning and deployments technique
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Q1. Salary Negotiations and joining discussion
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