L&T Technology Services Data Analyst Interview Questions and Answers

Basics of mathematical ability and verbal ability

Q1. Introduction - explain projects
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I have worked on various data analysis projects involving market research, customer segmentation, and predictive modeling.
• Market research project involved analyzing customer demographics and preferences to identify target markets.

• Customer segmentation project focused on dividing customers into distinct groups based on behavior and characteristics.

• Predictive modeling project used historical data to forecast future trend...read more
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Q2. Data analytics explain
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Data analytics is the process of analyzing raw data to draw conclusions and make informed decisions.
• Data analytics involves collecting, cleaning, and transforming data into insights.

• It uses statistical analysis, machine learning, and data visualization techniques.

• Examples include analyzing sales data to identify trends, predicting customer behavior, and optimizing marketing campaigns.
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Q1. Shuffle and merge in Haddop
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Shuffle and merge are key processes in Hadoop for distributing data across nodes and combining results.
• Shuffle is the process of transferring data from mappers to reducers in Hadoop.

• Merge is the process of combining the output from multiple reducers into a single result.

• Shuffle and merge are essential for parallel processing and efficient data analysis in Hadoop.

• Example: In a word count job, shuffle will group words by...read more
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Q1. Why this company?
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