Cleaning your data in Power BI

Data preparation typically involves cleaning, transforming, and structuring data into a format that is suitable for analysis. Power BI offers several tools to help with this process, including the Power Query Editor, data modeling, and DAX formulas. In the later chapters of this book, you will dive deeper into each of these tools. Here is an example of the Power Query Editor window accessed from within the Power BI Desktop application:

Figure 1.1 – User interface (UI)/toolbar of the Power Query Editor

The Power Query Editor is a powerful tool that allows you to clean and transform data. It provides a user-friendly interface to perform various data transformation tasks, such as splitting columns, merging tables, filtering data, and removing duplicates. It also has several built-in functions to help you transform your data, such as date and text transformations.

Data modeling is another important aspect of Power BI...