Summary  
This chapter explains how to define and use parameters as dynamic variables in calculations and filters to build interactive analyses that update in real time without modifying the original dataset.  

General domain of usage  
Interactive data visualization dashboards

Here are the key features of parameters:  

While parameters themselves do not affect data directly, they become powerful when **combined with calculated fields** or used as **dynamic filters**. For instance, you can create a parameter to adjust a percentage value dynamically or switch between different categories for comparison.  

You can experiment with parameters in your dashboards to enable **"what-if" analysis** and provide interactive, user-driven insights.

This streamlined beginner course focuses on the essential Tableau skills needed for business intelligence: connecting data sources, working with dimensions and measures, creating interactive visualizations, designing dashboards, and sharing insights. Each chapter includes practical tasks and projects for hands-on learning.

Interactive Dashboards with Parameters