Ramco Systems Data Analyst Interview Questions and Answers

Q1. Tell me about your self?
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Q2. What technology & tools u know ? And basic questions regarding that topics ?
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Q1. Job culture and job responsibilities ?
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Q2. Some questions on an analytical tools like power BI ?
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Q1. Basics of plsql
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Q1. Basics of Sql and Powerbi
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Q1. What is ur expecting salary
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KPI's for the ecommerce industries

Contains math aptitide and basic tableau questions

Sql coding test with joins sub queries and stored procedures

Q1. Explain Feature selection Techniques
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Feature selection techniques are methods used to select the most relevant features for a predictive model.
• Filter methods: Select features based on statistical measures like correlation, chi-squared, or mutual information.

• Wrapper methods: Use a specific model to evaluate the importance of features by training and testing subsets of features.

• Embedded methods: Features are selected as part of the model training process, l...read more
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Q2. Difference between Covariance and Correlation
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Covariance measures the relationship between two variables, while correlation measures the strength and direction of a relationship.
• Covariance can be positive, negative, or zero, indicating the direction of the relationship.

• Correlation is always between -1 and 1, with 1 indicating a perfect positive relationship, -1 indicating a perfect negative relationship, and 0 indicating no relationship.

• Covariance is affected by t...read more
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Find Count of even-odd pairs in array.

Q1. Multi hop architucture
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