EQS 是廣泛使用的結構方程模型（Structural Equation Modeling）的軟體，具有易於使用的特性。用戶可使用簡單的數據錄入與輸出操作就可進行統計檢驗和繪圖工作。EQS以便利的數據處理和統計預先處理為特色。

EQS 提供研究者和統計學家一個用於結構方程式模型的簡易工具，其功能包含多元迴歸、驗證性因子分析、結構化平均分析、因徑分析和多群體比較等等。使用過EQS的學者一致認同EQS提供完整且簡單操作接口。使用EQS，不必具備任何矩陣代數的知識就也可輕易操作。

更新介紹

» EQS’ comprehensive data management capabilities allows users to work with data without having to use other programs such as SPSS®. Imports SPSS files.

» EQS tests the full range of SEM including latent regression, confirmatory factor analysis, structured means, multiple population, latent growth curve, multilevel analysis, correlation structure & categorical data models.

» EQS’ improved DIAGRAMMER makes model setup easy without use of command language or knowledge of matrix algebra! Yet, commands can be used and are useful for new features.

» EQS is preferred by thousands of researchers worldwide providing them with a wide range of easy to use statistical and data exploration tools.

» Arruda-Bentler Regularized GLS Test
» Jalal-Bentler Monte Carlo Test
» Nesting and Equivalence Tests
» Automatic Difference Tests
» Exploratory Factor Analysis
» (with Parallel Analysis & Bifactor Rotation)
» Smoothing a Correlation Matrix
» New Formula for Robust RMSEA
» Satorra-Bentler Mean and Variance Adjusted Test Statistic
» Robust Statistics for Clustered Data