SAS (Statistical Analysis System)是一个模块化、集成化的大型应用软件系统。它由数十个专用模块构成，功能包括数据访问、数据储存及管理、应用开发、图形处理、数据分析、报告编制、运筹学方法、计量经济学与预测等等。-SAS (Statistical Analysis System) is a modular, integrated large-scale application software systems. It consists of dozens of specialized modules, functions, including data access, data storage and management, application development, graphics processing, data analysis, report preparation, methods of operations research, econometrics and forecasting, etc..