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BASIC SAS training

By Kavitha B Krishnappa (00621I)

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Agenda

Introduction

Core Technologies

Vocabulary

SAS Processing

Sample program

Summary

Questions

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Statistical Analysis System

Integrated system of software products thatenables you to perform

Data entry, retrieval and management

Report writing and graphics Statistical and mathematical analysis Business planning, forecasting and decision

support Operations research and project

management Quality improvement Applications development

Manage

Access

Present Analyze

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Core Technologies

Multi-Vendor Architecture

Multi-Engine Architecture

Rapid Application Development Web enablement

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Vocabulary

Data set

Observation

Variable

Data value

Informat

Format

Missing values

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SAS Datasets = Observation X Variables

Obs Col1 Col2 Col3

1

2

Obs Col1 Col2 Col3

1

2

Obs Col1 Col2 Col3

1

2

Obs Col1 Col2 Col3

1

2

Obs Col1 Col2 Col3

1

2

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Temporary v/s Permanent SAS dataset

Temporary SAS datasets

are stored in the work library

erased when session is closed

use less hard disk space Permanent SAS datasets

are created in files/folders

can be reused

use more memory on the hard-drive

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Informat and Format

Informat => Reads data value incertain forms

Format => Writes value out in aparticular form

Read as written asSAS variableComma10.

Output data

Dollar8.2$1,234.00

Input data value

1234

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Missing values Unknown data value for a variable in a observation Represented by a dot(.) Something to look out for

Obs Id Age Sex

1 001 21 F

2 002 23 .

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SAS processing

A sequence of SAS statements executed inorder. Every SAS statement ends with asemicolon(;).

DATA step

manipulates data

Procedure step

analyzes data, produces output ormanages SAS files

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Raw data

file

Data

step

Data

step

Pro

c

Ste

p

Pro

c

Ste

p

Final

Report

Final

Report

SAS

Dataset

s

SAS

Dataset

s

Analysis

Results

Analysis

Results

Processflow

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Simple example

DATA TEST;INPUT AGE SEX $ WEIGHT ;CARDS;

32 F 15025 M 180;PROC PRINT;

TITLE1 ' DATA TEST';TITLE2 ' INPUT THRU CARDS ';RUN;

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JCL

Inline

//STEP01 EXEC SASPROD,REGION=8M,STIME=120

//SYSIN DD *

sas program

/*

Thru dataset

//STEP01 EXEC SASPROD,REGION=8M,STIME=120

//SYSIN DD DSN=SAS.PDS.NAME(PROGRAM),

// DISP=SHR

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What to look out for

SAS LOG

SAS PRINT

OUTPUT FILES

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Log

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Log

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Log

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SAS PRINT

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Summary

Used to access, manage , analyze andpresent data

Written in free format

Interpreted not Compiled Step by step approach Data set, observation, variables, missing

values

Sample example

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Questions

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