2.2.3. Econometric Model

Econometric models are able to analyze the correlation between data, the degree of association, etc., and are the most common methods used in economics research. In this study, econometric models are used to investigate the correlation and significance of pollution data in relation to land economic efficiency. Econometric models can be classified into time series regression models, cross-sectional regression models and panel regression models, depending on the type of data [47]. As panel data are used in this paper, a panel regression model is used. Econometric modeling is able to reflect the correlation between variables in a holistic manner and test the research hypothesis by quantifying them. However, it tends to ignore the unique performance of each region. For example, in this study, we can determine the relationship between land economic efficiency and environmental pollution improvement through econometric models, but this conclusion is presented based on the full sample, while the specific performance of each region is not known. This makes the study conclusions less fleshed out.
