Enco Engineers Combine Data Analyst Interview Questions and Answers

Easy and simple codes and also both aptitude and coding were included in the test.

Q1. Asked to write some easy codes like anagrams, palindrome etc
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Q2. About Machine Learning and also discussion on the resume
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Q3. Completed both hr and technical rounds.
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30 questions and time was approx. 45 min to 60 min

There were some basic as well as some high level questions

Q1. What are joins and its types?
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• FULL ...read more
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Q2. What are aggregate functions?
Ans. 
Aggregate functions are functions in databases that perform a calculation on a set of values and return a single value.
• Aggregate functions are used to perform operations on a group of rows and return a single result.

• Common aggregate functions include SUM, AVG, COUNT, MIN, and MAX.

• For example, SUM function calculates the total of a column, AVG calculates the average, COUNT counts the number of rows, MIN finds the minimu
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Q1. Coding questions in python eda part
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Q1. Where do u see in next 5 years
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Sql test like joins and etc

Q1. Why do you want to join the company
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Q1. Explain projects, python string pattern code, sql query
Ans. 
The question asks the candidate to explain projects, python string pattern code, and SQL query.
• Discuss the projects you have worked on as a data engineer, highlighting your role and the technologies used.

• Explain how you have used Python string pattern code to manipulate and analyze data.

• Provide an example of a SQL query you have written to extract and analyze data from a database.

• Emphasize the impact and results of you...read more
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Predictive modeling project

Q1. Explain the project and that related questions only.
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