This document provides an overview of comparative statistics. It begins by defining comparative statistics as the comparison of different equilibrium positions associated with changes in exogenous variables or parameters of an economic model. It then provides examples of how comparative statistics can be used to analyze how changes in things like taxes, government spending, or weather would affect equilibrium outcomes. The document walks through examples of comparative statistics analyses for a simple market model and national income model. It discusses techniques for models with explicit solutions versus general functional forms. Finally, it outlines some limitations of comparative statistics, such as ignoring adjustment processes and time dynamics.