Excel Power Query and Tableau Prep are designed for easy tasks that require somewhat-clean data to start with. In contrast, Alteryx and Trifacta can deal with almost all kinds of raw data.

This article compares the data visualization program Tableau to Excel, examines their relative strengths, and provides a simple walk-through on how to use Tableau.

Data Pro: An intelligent data preparation assistant that helps transform raw data into business-ready information through automated cleaning and transformation. (Available June 2025) ...

Among data visualisation diehards, such as those who thronged the Tableau conference last year, there is perhaps no greater crime than simply accepting the default charts offered by Excel, the ...