有关概率论的外文文献

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有关概率论的外文文献

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SAS Statistical Analysis Software And Logistic Regression I. Overview:

SAS is called the Statistics Analysis System, the first from the University of North Carolina's two post-graduate preparation of biostatistics, and in 1976 the Institute of SAS software is

established e, the formal SAS software launched. SAS is a large-scale decision support for integrated information systems, but the software system functions limited to the first statistical analysis, since the statistical analysis is still an important part of its core functionality. the current SAS version is 9.0 version, the size is about 1G. After years of development, SAS has been around more than 120 countries and regions, nearly 30,000 institutions that have a direct users over three million people, across the financial, medical and health, production, transport, communications, government and education and scientific research. In Britain and the United States and other countries, skilled using SAS for statistical analysis is the conditions for many companies and research institutions selection. In data processing and statistical analysis, SAS system known as the international standard software systems, and in 96 ~ 97 years has been selected as the first choice for the establishment of a database product. SAS is called the Big Mac statistical software sector. The other example of this is as follows: in a harsh strict world-famous U.S. FDA drug approval process, the statistical analysis of the drug test results is carried out SAS and other software will be voided! Even a simple and standard deviation are void! This shows the authority of the SAS.

有关概率论的外文翻译

SAS is a combination of SAS software system, which is a combination of multiple functional

modules, the basic part of BASE SAS module. BASE SAS module is the core of the SAS system,which assume the main task of data management and user management environment for the conduct of the user of language processing, call the other SAS modules and products. In other words, SAS systems, we start the BASE SAS module, which in addition has its own data management, programming and

computing descriptive statistics, the SAS system or the central

dispatching room. It can stand alone, but also with other products or modules together form a complete system. Each module can be installed and updated through the installation process very easy. SAS system has a flexible interface and powerful extension of the functional modules in the basis of BASE SAS, you can add the following different modules and a variety of new features: SAS / STAT

(statistical analysis module), SAS / GRAPH (graphics module) , SAS / QC (quality control module), SAS / ETS (Econometric and time series analysis module), SAS / OR (operations research module), SAS / IML (interactive matrix programming language module), SAS / FSP ( fast data-processing module of the interactive menu system), SAS / AF

(interactive full-screen application system software modules) and so on. SAS has a intelligent drawing system, it not only painted a variety of charts, but also draw the map. SAS provides a wide range of statistical process, each process contains a great deal of any option. Users can set a series of data processing to realize more complex statistical analysis. In addition, SAS also offers a variety of probability analysis function, quantile function, the sample statistics functions and random number generator function, so that users can request easily special statistics.

2. operation

SAS was developed from the mainframe system, the core operation is the process-driven, after many years of development, SAS has now

become a complete set of computer language, and its user interface is also fully embodied the characteristics: It uses MDI (Multiple

Document interface), the user input program in the PGM window, the results of the analysis in the form of text output in the OUTPUT

window. using the program, users can complete all the work, including statistical analysis, forecasting, modeling and simulation, sampling and so on. However, this makes the beginners to learn SAS

有关概率论的外文翻译

language, entry is more difficult. The Windows SAS version accord to different user groups to develop a number of graphical user interface, graphical user interface of these different characteristics, use very convenient. However, due to limit, and not to promote the focus of SAS, so the vast majority of people do not understand.

3.the basic operation and basic concepts of SAS

3.1 Dataset (dataset) and the database

Statistics are for the operation of the data, files which is filled with SAS data is named dataset. in the capacity as the data sets, data sets also included in different library (for the time being it understood as a database). SAS in the library is divided into two types of permanent and temporary. As the name suggests, the existence of a permanent library in the data set is permanent (as long as you do not delete it), temporary library in the data sets from the SAS you automatically be deleted. As for the concept of SAS in the

database, the simplest to understand is a directory, a directory of stored data sets.

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