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Data Analyst Interviews

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Data Analyst Interview Questions

In a data analyst interview, employers ask questions that help ascertain your level of technical skills, including familiarity with data analysis software, data analysis terminology, and statistical methods. Interviewers may also use guesstimate questions to learn about your problem-solving skills and creative thinking.

Top Data Analyst Interview Questions & How to Answer

Question 1

Question #1: What data analysis software have you worked with?

How to answer
How to answer: Data analysts use software to perform many of their job duties. Interviewers ask this question to determine your current skill level and how much training you may require. List and discuss any data analysis software you have used. Be sure to mention specific software training and give examples of how you used the software on the job.
Question 2

Question #2: Which statistical methods are most beneficial for data analysis?

How to answer
How to answer: With this question, interviewers are testing your understanding of the most commonly used statistical methods, such as the simplex algorithm, imputation, the Bayesian method, and the Markov process. List and discuss data analysis methods, including the specific benefits of each process. If possible, include examples of how you used specific statistical methods on the job.
Question 3

Question #3: Explain how you would estimate the pairs of rain boots sold in Seattle in May?

How to answer
How to answer: Guesstimate questions are often used in data analyst interviews to test your analytical thinking and problem-solving methods. Share how you would work through the problem, including the data sets you would need, how you would go about finding data, and the methods you would use to calculate an estimated answer.

49,212 data analyst interview questions shared by candidates

1. Introduce yourself 2. You worked for 3.8 years right why did you decide to do masters in DSA? 3. Choose any one of your project and tell me how you defined the problem, What was your approach, How did you Solve it? 3.a) How did you do the map visualization in your project (Coz i mentioned i did it using Tableau)? 3.b) What is topic modeling? If we have some documents how does the algorithm work can you explain? (I used it oin project so she asked) 3.c) Have you ever used shape files for visualization? (I said i havent, but I extracted the longitude n latitude info from tweet json and done the visualization) 4. Do you know Python? I said yes i have been using for a more than 2 years now. 5. What is the difference between Array and a List. 5.a) When do you uyse Array and when do you use lists? 6. Tell me the packages you used in python. 6.a) Tell me the difference between matplotlib and plotly and what is your go to package for visualizations. 6.b) What are your go to tools for visualizations? (R Markdown and JUpyter notebook most of the time. But i recently learned Tableau on my own interest) 7. Do you know SQL well? Where did you use (In work and during my masters, I've even done DBMS course and worked on Azure Data Studio) 8. Can you write a query to display the First name of top 5th salaried person from the employee table. SELECT TOP (1) FIRST_NAME FROM (SELECT TOP (5) FROM Employee ORDER BY Salary DESC) AS Employee ORDER BY Salary ASC; 9. Write a query to Display the first name of the person whose salry is greater than the average salary of all people in the table. 9.a) Difference between WHERE clause and HAVING clause when do you use them. 10. What is the most important skill do you think you have, which you consider you're very good at. (I said, the ability to understand a problem and present it to others in, as simplified manner as possible. My Presentation and visualization skills are my strength.) 11. You are the owner of a restaurant and you're also a Data ANalyst, Your sales data for the first 6 months of the years is in profits but your restaurant is in loss for the last 6 months. What would you do with this data to improve your sales?
avatar

Data Analyst

Interviewed at Tata Consultancy Services (North America)

3.5★
Jun 29, 2021

1. Introduce yourself 2. You worked for 3.8 years right why did you decide to do masters in DSA? 3. Choose any one of your project and tell me how you defined the problem, What was your approach, How did you Solve it? 3.a) How did you do the map visualization in your project (Coz i mentioned i did it using Tableau)? 3.b) What is topic modeling? If we have some documents how does the algorithm work can you explain? (I used it oin project so she asked) 3.c) Have you ever used shape files for visualization? (I said i havent, but I extracted the longitude n latitude info from tweet json and done the visualization) 4. Do you know Python? I said yes i have been using for a more than 2 years now. 5. What is the difference between Array and a List. 5.a) When do you uyse Array and when do you use lists? 6. Tell me the packages you used in python. 6.a) Tell me the difference between matplotlib and plotly and what is your go to package for visualizations. 6.b) What are your go to tools for visualizations? (R Markdown and JUpyter notebook most of the time. But i recently learned Tableau on my own interest) 7. Do you know SQL well? Where did you use (In work and during my masters, I've even done DBMS course and worked on Azure Data Studio) 8. Can you write a query to display the First name of top 5th salaried person from the employee table. SELECT TOP (1) FIRST_NAME FROM (SELECT TOP (5) FROM Employee ORDER BY Salary DESC) AS Employee ORDER BY Salary ASC; 9. Write a query to Display the first name of the person whose salry is greater than the average salary of all people in the table. 9.a) Difference between WHERE clause and HAVING clause when do you use them. 10. What is the most important skill do you think you have, which you consider you're very good at. (I said, the ability to understand a problem and present it to others in, as simplified manner as possible. My Presentation and visualization skills are my strength.) 11. You are the owner of a restaurant and you're also a Data ANalyst, Your sales data for the first 6 months of the years is in profits but your restaurant is in loss for the last 6 months. What would you do with this data to improve your sales?

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