What is the primary purpose of Tableau Prep?

The primary purpose of Tableau Prep is data preparation and cleaning before analysis. This tool focuses on the processes required to get data ready for visualization and insightful analysis in Tableau. It allows users to connect to multiple data sources, perform transformations such as aggregations, unions, and joins, and clean data by handling null values, correcting data types, and filtering out irrelevant information.

Effective data preparation is essential in analytics, as high-quality data leads to more accurate and meaningful insights. Tableau Prep provides a user-friendly interface where users can visualize the steps they take in cleaning and shaping the data, which enhances the overall understanding of the data's structure and prepares it for analysis in Tableau Desktop.

The other choices involve tasks that fall outside the main focus of Tableau Prep. For instance, creating complex visualizations and building statistical models are functionalities offered by Tableau Desktop, while managing user access and credentials pertains to Tableau Server or Tableau Online. Thus, the emphasis of Tableau Prep is clearly on ensuring that the data is well-prepared and ready for effective analysis.