UnitedHealth Data Scientist Interview Questions and Answers

Q1. What time intelligence functions can be used for ytd and qtd analysis
Ans. 
Time intelligence functions like YTD (Year-to-Date) and QTD (Quarter-to-Date) can be used for YTD and QTD analysis in data analytics.
• YTD analysis can be done using functions like YTD() or TOTALYTD() to calculate values from the beginning of the year up to the selected date.

• QTD analysis can be done using functions like QTD() or TOTALQTD() to calculate values from the beginning of the quarter up to the selected date.

• Thes...read more
Answered by AI
Add your answer
Q2. Difference between import and direct query
Ans. 
Import brings data into Power BI for further analysis, while direct query connects to data source in real-time.
• Import: Data is loaded into Power BI for analysis, improving performance but requiring periodic refreshes.

• Direct Query: Connects to data source in real-time, allowing for up-to-date information but potentially slower performance.

• Import is suitable for smaller datasets, while direct query is better for large da
Answered by AI
Add your answer

Q1. Asked about my previous experience details
Add your answer
Q2. Asked about why I changed my job
Add your answer

About hospital and it's services

Basic English Grammar

Q1. Tell me about yourself. What was your role in previous organisation? Tell me about my last trip for 2 minutes.
Ans. 
I am a dedicated professional with experience in project management and team leadership.
• Led a team of 10 project coordinators in my previous organization

• Managed multiple projects simultaneously, ensuring deadlines were met

• Implemented new strategies to improve efficiency and productivity

• Received recognition for outstanding performance in project execution
Answered by AI
Add your answer

Q1. Tell me about your self What was your role in previous organisation
Ans. 
I am a dedicated professional with experience in project management and team leadership.
• Led a team of 10 project coordinators in planning and executing multiple projects simultaneously

• Managed project timelines, budgets, and resources to ensure successful project completion

• Collaborated with cross-functional teams to identify project requirements and deliverables

• Implemented project management best practices to improve ef...read more
Answered by AI
Add your answer

Power bi assignment was given to solve

Q1. Optimization techniques in sql
Ans. 
Optimization techniques in SQL involve using indexes, query optimization, and proper database design.
• Use indexes on columns frequently used in WHERE clauses to speed up query performance

• Avoid using SELECT * and instead specify only the columns needed in the query

• Optimize queries by using appropriate join types and conditions

• Normalize database tables to reduce redundancy and improve query efficiency
Answered by AI
Add your answer
Q2. Sub queries in sql
Ans. 
Sub queries in SQL are queries nested within another query to retrieve data based on the result of the outer query.
• Sub queries can be used in SELECT, INSERT, UPDATE, and DELETE statements.

• They can be used to filter results, retrieve data from multiple tables, or perform calculations.

• Example: SELECT * FROM table1 WHERE column1 = (SELECT column2 FROM table2 WHERE condition);
Answered by AI
Add your answer
Q3. Types of Join in sql
Ans. 
Types of joins in SQL include inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a 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 outer join: Returns all rows when there is a match in either table
Answered by AI
Add your answer
Q4. Time intelligence functions in power bi
Ans. 
Time intelligence functions in Power BI are used to analyze and compare data based on time periods.
• Time intelligence functions help in calculating year-to-date, month-to-date, and other time-based calculations.

• Functions like TOTALYTD, SAMEPERIODLASTYEAR, and PARALLELPERIOD are commonly used for time intelligence in Power BI.

• These functions allow for easy comparison of data across different time periods and help in tren
Answered by AI
Add your answer
Q5. Logical questions in aptitude
Add your answer
Q6. Row level security in power bi
Ans. 
Row level security in Power BI allows users to restrict access to specific rows of data based on their role or criteria.
• Row level security can be implemented by creating roles in Power BI and defining rules to filter data based on user roles.

• Users can be assigned to specific roles which determine the data they have access to.

• Row level security helps in ensuring data privacy and compliance with regulations.

• For example, ...read more
Answered by AI
Add your answer

C programming

Basic coding questions related to javascript or Java

Specific to your skills, for FE web development angular related questions.

Q1. Normal salary negotiation
Add your answer

It was medium to difficult level test

Q1. Questions about core subjects like oops pillars
Add your answer
Q2. Questions about projects, technologies used
Add your answer

Q1. Why do you want to join this
Add your answer
Q2. Your previous experience and questions about your background
Add your answer