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Power BI Test

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Type

Software Skills

Time

10 minutes

Level

Medium

Questions

12

About the Test

Power BI is a suite of business analytics tools that enables users to connect to, visualize, and analyze data with interactive dashboards and reports. It is developed by Microsoft and is available as a cloud-based service (Power BI service) and as a desktop application (Power BI Desktop).

Power BI includes a range of features and tools for connecting to and integrating data from a variety of sources, including databases, files, and cloud-based data services. It also includes tools for designing and building interactive dashboards and reports, as well as creating custom data visualizations.

Power BI is designed to make it easy for users to gain insights and make data-driven decisions. It is used by a wide range of organizations, including businesses, government agencies, and educational institutions, to analyze and visualize data from various sources. Power BI is available as a subscription service, with a range of pricing plans to suit different needs and budgets.

Sign up for free Preview questions

Skills Measured

  • Methodology
  • Tools and Technology
  • Components of Power BI
  • DAX

Roles

  • Power BI Data Analyst
  • Power BI Analyst
  • Power BI Developer
  • Power BI Business Analyst

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1

Methodology

The methodology refers to the approach or process followed in designing and developing a Power BI dashboard or report. This could include steps such as gathering requirements, designing the layout and visualizations, connecting to and preparing the data, and testing and debugging the final product

2

Tools and Technology

Power BI is a suite of tools and technologies for business analytics and data visualization. It includes a range of tools for connecting to and integrating data from a variety of sources, designing and building interactive dashboards and reports, and creating custom data visualizations. These tools include the Power BI service, the Power BI Desktop application, and the Power BI Mobile app.

3

Components of Power BI

Power BI consists of several components, including the Power BI service, the Power BI Desktop application, and the Power BI Mobile app. The Power BI service is a cloud-based platform for creating and sharing dashboards and reports, while the Power BI Desktop application is a Windows-based application for designing and building dashboards and reports. The Power BI Mobile app is a mobile application for accessing and interacting with Power BI dashboards and reports on the go.

4

DAX

DAX (Data Analysis Expressions) is a formula language used in Power BI and other Microsoft products, such as Excel and Analysis Services, for creating calculated columns and measures in a data model. DAX includes a range of functions for working with data, such as filtering, aggregating, and calculating values. It is an important component of Power BI, as it enables users to define complex calculations and business logic in their data models, which can then be used to build interactive dashboards and reports.

The test is created by a subject-matter expert

Testlify’s skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

View sample score cards

Top five hard skills interview questions for Power BI

1. Can you explain the difference between calculated columns and measures in Power BI?
Why this Matters?

This question tests the candidate’s understanding of the key concepts in Power BI’s data modeling, which is fundamental to building effective reports and dashboards. Calculated columns and measures are two different ways of performing calculations on data in Power BI, and it’s important for the candidate to know when to use each one.

What to listen for?

Listen for the candidate to clearly articulate the difference between calculated columns and measures, and provide examples of when each one would be appropriate to use.

2. Have you worked with DAX expressions in Power BI before? Can you give an example of a complex DAX expression that you’ve written?
Why this Matters?

DAX (Data Analysis Expressions) is a powerful formula language used in Power BI to create calculations and manipulate data. This question tests the candidate’s experience with writing DAX expressions and their ability to use it effectively to solve business problems.

What to listen for?

Listen for the candidate to describe their experience working with DAX and provide an example of a complex DAX expression they’ve written. Additionally, pay attention to how the candidate talks through their thought process in designing the expression and the efficiency of their solution.

3. Can you describe the different types of relationships that can exist between tables in Power BI?
Why this Matters?

This question tests the candidate’s knowledge of Power BI’s data modeling capabilities and the importance of building relationships between tables to create effective reports and visualizations. There are three types of relationships in Power BI, and it’s important for the candidate to know how to use each one.

What to listen for?

Listen for the candidate to describe the three types of relationships in Power BI (one-to-one, one-to-many, and many-to-many) and provide examples of when each type of relationship would be appropriate to use.

4. Have you worked with custom visuals in Power BI before? Can you describe how to create a custom visual and integrate it into a report?
Why this Matters?

Custom visuals are third-party visualizations that extend Power BI’s core functionality, allowing users to create more advanced and customized reports. This question tests the candidate’s experience with working with custom visuals and their ability to integrate them into reports.

What to listen for?

Listen for the candidate to describe their experience working with custom visuals in Power BI, and provide an example of how they created and integrated a custom visual into a report. Also, listen for the candidate to describe any challenges they faced and how they overcame them.

5. Can you describe the different types of gateways available in Power BI, and explain when to use each type?
Why this Matters?

Power BI gateways are used to bridge the gap between on-premises data sources and Power BI’s cloud-based service. This question tests the candidate’s knowledge of gateways and their ability to choose the appropriate gateway type for a given situation.

What to listen for?

Listen for the candidate to describe the different types of gateways available in Power BI, such as personal mode, on-premises, and cloud. Also, listen for the candidate to explain the trade-offs and use cases for each gateway type.

Frequently Asked Questions for Power BI

Power BI is a Data Visualization and Business Intelligence tool that converts data from different data sources to interactive dashboards and BI reports. Power BI suite provides multiple software, connector, and services – Power BI desktop, Power BI service based on SaaS, and mobile Power BI apps available for different platforms.

This is a moderate-level test. It determines the applicant’s ability towards the tools, methods, DAX, and the basic components of Power BI.

  • Power BI Data Analyst
  • Power BI Analyst
  • Power BI Developer
  • Power BI Business Analyst

  • Methodology
  • Tools and Technology
  • Components of Power BI
  • DAX

  • Connecting to and integrating data from a variety of sources, including databases, files, and cloud-based data sources.
  • Transforming and cleaning data to prepare it for analysis.
  • Building and designing interactive dashboards and reports using Power BI tools and features.
  • Creating custom data visualizations using Power BI Visualization Libraries or other tools.

Frequently Asked Questions (FAQs)

Want to know more about Testlify? Here are answers to the most commonly asked questions about our company.

These are ready-made tests, existing in our test library, created by subject matter experts. We have 200+ such skills tests covering various skills from programming skills to DevOps, including Aptitude and Personality testing.

You can go to the ‘Test Library’ tab and search for tests from the Job Role or Test Type drop-down menu.

Currently, we do not offer any sample tests. However, when you select a test, there would be a few practice questions before the start of the actual test, which would give you a fair idea of how the entire test would look.

Our tests typically take between 25-30 minutes to complete.

In case you need to test for a unique skill-set or specialized experience, you can add your own questions and customize the test to suit your requirements.

We’ve put a lot of effort into ensuring a conducive test environment. A stable internet connection, an internet browser with cookies and Java-Script enabled is all that is required!
However, for a smooth test-taking process, we recommend the following browsers:
– Google Chrome
– Internet Expl
– Mozilla Firefox

Yes, our tests are compatible with almost all modern mobile devices (including tablets) that have a webcam installed.

Yes, our tests are EEOC (Equal Employment Opportunity Commission) compliant and are whetted by subject matter experts, thus having high reliability (test consistency) and validity (accuracy of the test).

Yes! We integrate with popular recruiting tools such as Greenhouse, Lever, GoodTime, and many more.

We are GDPR compliant and take data security very seriously. You have complete ownership of your data. All your data is safe and secure, and we do not expose it to any third party.

Testlify is an excellent tool for assessing candidates’ soft and hard skills. The founder and customer success team were helpful during onboarding and demonstrated a commitment to continuously improving the platform.
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Founder, ExpHire
Testlify’s integration with ATS makes it simple to incorporate into recruitment processes. Customizable test suites, open-ended questions, and qualifying questions streamline the candidate assessment process and improve collaboration with hiring managers. 
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A must-have tool in any HR department! Well thought out a comprehensive platform that shortens the candidate selection time significantly.
Meir Shachar
CEO at PowerLinx
With Testlify, we were able to optimize our initial screening process by upwards of 75%.
We saved a tremendous amount
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President, Arch Advisory Group
Testlify has revolutionized our hiring process by streamlining the screening stage. It has saved us countless hours by allowing us to shortlist the right candidates.
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CEO at Sookshum Labs

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