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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 were the four key tips for optimizing M queries discussed this chapter?
    1. Sorting, filtering, grouping, summarizing
    2. Filtering and reducing data, using native M functions, creating custom functions, optimizing memory usage
    3. Conditional formatting, joins, aggregations, pivoting
    4. Concatenation, union, splitting, transforming
  2. In the custom function for calculating the weighted average, what are the parameters of the function, and how is the weighted average calculated?
    1. Parameters: table, weights, values; the weighted average is calculated by summing the weighted values and dividing by the total weight
    2. Parameters: table, columns; the weighted average is calculated by multiplying values by weights
    3. Parameters: values, weights, total; the weighted average is calculated by summing the values and dividing by the weights
    4. Parameters: rows, weights, values; the weighted average is calculated by summing the values and multiplying by the weights
  3. How can Table.Buffer optimize the...
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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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