1976 SAS INSTITUTE INC) was established to start the maintenance, development, sales and training of SAS system. During this period, it has gone through several versions. After years of improvement and development, SAS system is known as the international standard software for statistical analysis and has been widely used in various fields.
SAS system mainly completes four data-centric tasks: data access; Data management (sas's data management function is not very good, but its data analysis ability is strong, so Microsoft products are often used to manage data and then converted into sas data format. Pay attention to the matching use with other software); Data presentation; Data analysis. The highest version of the current software is SAS 9.3. Base SAS module is the core of SAS system. All other modules run in the environment provided by the base SAS. Users can choose the required modules to form a customized SAS system together with the basic SAS.