# Variables

- [Variable Basics](/variables/variable-basics.md): What are Variables?
- [Variable Setup](/variables/variable-basics/variable-setup.md): How to create and configure a Variable
- [Unit and Calculations](/variables/variable-basics/unit-and-calculations.md): Entering Unit and Calculation for a Variable
- [Time Segments](/variables/time-segments.md): Overview of Time Segments
- [Time Segment Setup](/variables/time-segments/time-segment-setup.md): How to create and edit Time Segments
- [Summaries](/variables/summaries.md): Editing Row and Columns Summaries of Variables
- [Default Assumptions](/variables/default-assumptions.md): How to use a Default Assumption to replace missing Assumptions