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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?

1. Imagine a table keeping track of all the rides a driver undertakes in a given day. How do you query that table to find out the time when he did not have any rides. So the table may have a record when he picks up his first ride and then he picks another and then drops both of them. After a while he picks up a few more which again is recorded in the table. So with all that how do you find the data when he does not have any rides
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Senior Data Engineer

Interviewed at Lyft

3.8★
Feb 18, 2019

1. Imagine a table keeping track of all the rides a driver undertakes in a given day. How do you query that table to find out the time when he did not have any rides. So the table may have a record when he picks up his first ride and then he picks another and then drops both of them. After a while he picks up a few more which again is recorded in the table. So with all that how do you find the data when he does not have any rides

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