David Card, Joshua Angrist, and Guido Imbens were awarded the 2021 Nobel Prize in Economics for their contributions to difference-in-differences analysis, often referred to as natural experiments. This analytical approach has proven valuable in understanding competition cases and related issues. In this post, we will provide an example to illustrate how this analysis functions.
Difference-in-Difference Analysis: An Example from Marathon and Ultramar
Briefs
