Introduction
Power BI is one of the most sought-after skills in data analytics. Whether you're an aspiring data analyst, a seasoned professional looking to upgrade your skills, or preparing for an interview, understanding Power BI's core concepts is essential. In this article, we’ll cover the most frequently asked Power BI interview questions, ensuring you’re well-prepared. Plus, don’t miss the exclusive e-book link with 55 Power BI Interview Questions with Answers for an in-depth guide!
1. What is Power BI?
Answer:
Power BI is a powerful business analytics tool developed by Microsoft, enabling users to visualize data, share insights across organizations, and embed visuals into apps or websites. It integrates seamlessly with other Microsoft products like Excel, Azure, and Dynamics 365.
Key Skills Required:
- Data visualization
- Understanding of data sources and connectors
- Report and dashboard creation
👉 Get the full list of Power BI questions, skills required, and answers:
2. Difference Between Power BI and Tableau
Answer:
Power BI and Tableau are both data visualization tools, but Power BI is better suited for Microsoft users and small to medium-sized businesses, offering affordability and seamless integration. Tableau excels in advanced visualization capabilities for larger organizations.
Key Skills Required:
- Comparative analysis of tools
- Familiarity with Power BI and Tableau features
- Decision-making based on business requirements
3. Difference Between Power Query and Power Pivot
Answer:
- Power Query: A tool for data extraction, transformation, and loading (ETL).
- Power Pivot: A data modeling and analytical tool for creating complex calculations and relationships.
Key Skills Required:
- Knowledge of ETL processes
- Understanding data modeling concepts
4. What is Power BI Desktop?
Answer:
Power BI Desktop is a free application that allows users to connect to data, transform it, and create interactive reports. It's the primary development environment for Power BI reports.
Key Skills Required:
- Hands-on experience with Power BI Desktop
- Report creation and publishing
5. What is Power Pivot?
Answer:
Power Pivot is an Excel add-in used for data modeling and creating relationships between data sets to perform advanced calculations.
Key Skills Required:
- Advanced Excel skills
- DAX (Data Analysis Expressions) proficiency
6. What is Power Query?
Answer:
Power Query is a data transformation tool used in Excel and Power BI to clean, combine, and reshape data.
Key Skills Required:
- ETL process management
- Data transformation techniques
7. What is DAX?
Answer:
DAX (Data Analysis Expressions) is a formula language used in Power BI and Power Pivot for creating custom calculations.
Key Skills Required:
- Writing DAX formulas
- Analytical thinking
8. What are Filters in Power BI?
Answer:
Filters in Power BI allow users to narrow down data displayed in reports or dashboards based on specific criteria.
Key Skills Required:
- Data filtering and slicing
- Understanding filter context in Power BI
9. What are Custom Visuals in Power BI?
Answer:
Custom visuals are user-created or third-party visuals that can be imported into Power BI to extend visualization capabilities.
Key Skills Required:
- Designing or using custom visuals
- Extending default Power BI features
10. What is GetData in Power BI?
Answer:
GetData is the feature in Power BI used to connect and import data from various sources like Excel, SQL Server, and web services.
Key Skills Required:
- Connecting to data sources
- Data integration and transformation
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Conclusion
Mastering Power BI can open doors to exciting career opportunities in data analytics. Leverage this guide and the e-book to sharpen your knowledge and ace your next interview!
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