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发表于 17-2-2010 00:02:11
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http://www.scribd.com/doc/6923428/SAS
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Statistical Analysis Software
首先SAS是一个统计分析软件
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Main Uses of SAS
主要用途
data entry, retrieval, and management
数据的输入,输出和管理
report writing and graphics
输出报表和图形报表
statistical and mathematical analysis
统计和数学分析
business planning, forecasting, and decision support
商业计划,预测,以及决策
operations research and project management
运营研究和项目管理
quality improvement
改进质量
applications development.
应用程序开发
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SAS有三个主要窗口
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Program Editor where you write and submit programs
程序编辑窗口
Log where SAS displays messages which indicates any errors that may be in a program
备注显示窗口
Output Where result appear after submitting programs
输出窗口
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The rows are the Observations
在SAS里,行被叫做Observations
The columns are the Variables
列被称作Variables
字符的空值用BLANK(空)表示
数字的控制用.来表示
典型的SAS程序分为两部分
Data Step
SAS statement that read data, create new datasets or variables, modify datasets, perform calculation.
Procedures
SAS statements that can perform statistical analyses, create & print reports & graphs |
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