Summary  
Parameters are dynamic variables that users can adjust at runtime and integrate into calculated fields or filters to create responsive, “what-if” analyses without altering the underlying data.

General domain of usage  
Interactive 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.

You will master 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