The Theil index finds applications in various fields, such as economics, sociology, and environmental studies. In economics, it helps measure income inequality and distribution, providing insights into wealth disparities. Sociologists employ this index to analyze social inequality, examining factors like education, race, and gender. Additionally, it aids in assessing spatial and regional inequality, helping policymakers allocate resources effectively. Environmental researchers apply the Theil index to study biodiversity and conservation efforts, identifying areas where species richness is highly concentrated or unevenly distributed. By understanding these applications, policymakers and researchers can make informed decisions that promote equitable distribution and sustainable development in various domains. The versatility of the Theil index makes it a valuable tool in addressing issues of inequality and resource allocation.

The Theil index is a widely used economic measure that has various applications in different fields. In economics, it is often employed to analyze income inequality within a population, helping policymakers understand the distribution of wealth. It is also utilized in the field of urban planning to study spatial inequality and identify areas that require targeted interventions for balanced development. Furthermore, the Theil index has found utility in assessing market competitiveness and concentration, allowing businesses to evaluate their market positions. Additionally, it has been applied in environmental studies to examine resource distribution and identify areas of environmental inequality for targeted conservation efforts. Overall, the Theil index serves as a valuable tool for analyzing and addressing disparities in various societal contexts.