Luminous Power Technologies Senior Data Analyst Interview Questions and Answers

Aptitude test and database test

Q1. Sql questions like joins
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Q2. Excel questions like vlookup
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Q1. KRA of your previous company?
Ans. 
The Key Result Areas (KRAs) of my previous company included data analysis, reporting, and visualization to support decision-making processes.
• Analyzing large datasets to identify trends and patterns

• Creating reports and dashboards to communicate insights to stakeholders

• Collaborating with cross-functional teams to gather data requirements

• Automating data collection and processing tasks using tools like SQL and Python
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Basic python questions

Q1. Explain xgboost
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XGBoost is a popular machine learning algorithm known for its speed and performance in gradient boosting.
• XGBoost stands for eXtreme Gradient Boosting.

• It is an implementation of gradient boosted decision trees designed for speed and performance.

• XGBoost is widely used in machine learning competitions and has become a popular choice for data scientists.

• It can handle missing data and is optimized for parallel processing.

• XG...read more
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Q2. Explain decision tree
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Decision tree is a predictive modeling tool that uses a tree-like graph of decisions and their possible consequences.
• Decision tree is a supervised learning algorithm used for classification and regression tasks.

• It breaks down a dataset into smaller subsets based on different attributes.

• Each internal node represents a feature or attribute, each branch represents a decision rule, and each leaf node represents the outcome...read more
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SQL coding and MCQ duration 45 min

Q1. Job responsibilities
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Q2. Power BI, tableau, SQL, python
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Q1. Tell me about yourself
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Q1. About yourself n work profile
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Q1. All the questions was based on the previous experience
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Reasoning, Sql, Python