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    Chapter 1. Basic Concepts

    Chapter 1. Basic Concepts

    Overview6
    Introduction6
    Objectives6
    SAS Programs7
    Components of SAS Programs7
    Characteristics of SAS Programs8
    Layout for SAS Programs9
    Processing SAS Programs9
    Log Messages10
    Results of Processing10
    SAS Libraries13
    How SAS Files Are Stored13
    Storing Files Temporarily or Permanently14
    Referencing SAS Files15
    Two-Level Names15
    Referencing Temporary SAS Files16
    Referencing Permanent SAS Files17
    Rules for SAS Names17
    SAS Data Sets18
    Overview of Data Sets18
    Descriptor Portion19
    Data Portion19
    Observations (Rows)20
    Variables (Columns)20
    Missing Values21
    Variable Attributes21
    Name22
    Type22
    Length23
    Format24
    Informat24
    Label25
    Summary26
    Text Summary26
    Points to Remember28
    Practice28
    Quiz29



      

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