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You're reading from  Data Cleaning with Power BI

Product typeBook
Published inFeb 2024
PublisherPackt
ISBN-139781805126409
Edition1st Edition
Concepts
Data Analysis
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Author (1)
Gus Frazer
Gus Frazer
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Gus Frazer

Gus Frazer is a seasoned analytics consultant who focuses on business intelligence solutions. With over eight years of experience working for the two market-leading platforms, Power BI (Microsoft) and Tableau, he has amassed a wealth of knowledge and expertise. He also has experience in helping hundreds of customers to drive their digital and data transformations, scope data requirements, drive actionable insights, and most important of all, clean data ready for analysis.
Read more about Gus Frazer

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Questions

  1. What percentage of time is generally spent on data cleaning and preparation in a data visualization project?
    1. 20-30%
    2. 50-80%
    3. 10-20%
    4. 80-100%
  2. Name three tools provided by Power BI for data preparation.
    1. Power Extract, data integration, data expressions
    2. Power Query, data modeling, SQL queries
    3. Data analytics, Query Editor, data mining
    4. Power Query, data modeling, DAX formulas
  3. What is the primary function of Power Query in Power BI?
    1. Creating visualizations
    2. Writing SQL queries
    3. Data transformation and preparation
    4. Building relationships between tables
  4. What is DAX, and how is it used in Power BI?
    1. As a data visualization tool
    2. As a programming language
    3. As a formula language for creating calculations and measures
    4. As a data storage format
  5. Why was DAX created, and what problem did it aim to solve?
    1. To create charts and graphs
    2. To bridge the gap between relational databases and spreadsheet tools
    3. To replace SQL queries
    4. To handle big data efficiently
  6. Explain the dual role of DAX as a formula...
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Data Cleaning with Power BI
Published in: Feb 2024Publisher: PacktISBN-13: 9781805126409
© 2024 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Gus Frazer

Gus Frazer is a seasoned analytics consultant who focuses on business intelligence solutions. With over eight years of experience working for the two market-leading platforms, Power BI (Microsoft) and Tableau, he has amassed a wealth of knowledge and expertise. He also has experience in helping hundreds of customers to drive their digital and data transformations, scope data requirements, drive actionable insights, and most important of all, clean data ready for analysis.
Read more about Gus Frazer

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