Panel data (or longitudinal data) tracks the same entities (like firms, countries, or people) over multiple time periods. Handling it in Stata requires a specific workflow to manage the dual nature of cross-sectional and time-series dimensions. 1. Structure Your Data (Long vs. Wide)
* diagnostics xtserial ln_y x1 x2 xttest3
Panel data (or longitudinal data) tracks the same entities (like firms, countries, or people) over multiple time periods. Handling it in Stata requires a specific workflow to manage the dual nature of cross-sectional and time-series dimensions. 1. Structure Your Data (Long vs. Wide)
* diagnostics xtserial ln_y x1 x2 xttest3 stata panel data exclusive