The Analyst Application

496 Pages·2003·2.84 MB·English

The
Analyst Application
Second Edition
The correct bibliographic citation for this manual is as follows: SAS Institute Inc. The Analyst
Application, Second Edition. Cary, NC: SAS Institute Inc.
The Analyst Application, Second Edition
Copyright © 2003, SAS Institute Inc., Cary, NC, USA
ISBN 1-58025-991-X
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SAS Institute Inc.
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SAS Institute Inc., SAS Campus Drive, Cary, North Carolina 27513.
1st printing, June 2002
2nd printing, August 2003
Note that text corrections may have been made at each printing.
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Contents
Chapter1.Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter2.TheDataTable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter3.ManagingResultsinProjects . . . . . . . . . . . . . . . . . . . . 67
Chapter4.CustomizingYourSession . . . . . . . . . . . . . . . . . . . . . . 87
Chapter5.CreatingGraphs . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Chapter6.CreatingReports . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Chapter7.DescriptiveStatistics . . . . . . . . . . . . . . . . . . . . . . . . . 181
Chapter8.HypothesisTests . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Chapter9.TableAnalysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Chapter10.AnalysisofVariance . . . . . . . . . . . . . . . . . . . . . . . . 267
Chapter11.Regression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Chapter12.SampleSizeandPowerCalculations . . . . . . . . . . . . . . . . 325
Chapter13.MultivariateTechniques . . . . . . . . . . . . . . . . . . . . . . 355
Chapter14.SurvivalAnalysis . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Chapter15.MixedModels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Chapter16.RepeatedMeasures . . . . . . . . . . . . . . . . . . . . . . . . . 413
Chapter17.Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437
AppendixA.SummaryofTasks . . . . . . . . . . . . . . . . . . . . . . . . . 449
SubjectIndex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
SyntaxIndex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481

Acknowledgments
Credits
Documentation
Writing TimArnold,ElizabethBrownrigg,NathanCurtis,
MartyKing,MauraStokes,LoriWitham
Editing DonnaM.Sawyer,MauraStokes
EditorialSupport DeeDoles
ProductionSupport CreativeSolutionsDivision
andCoverDesign
Software
Development DavidDeNardis,GreggKemp,JulieLaBarr,
JeanneMartin,KatherineJ.Roggenkamp,
JeffSun,WayneE.Watson
Testing DanielS.Adelsberg,NathanA.Curtis,
WendyHassler,LoriWitham,OzkanZengin
Support Group
QualityAssurance MarkF.Austin,KatherineGiacoletti,KellyM.Graham
vi
About the Analyst Application
The Analyst Application is a point-and-click interface to basic statistical
analyses in the SAS System. These analyses are performed primarily by
usingproceduresinbaseSASandSAS/STATsoftware,althoughsomeanal-
ysesarecarriedoutwiththeuseofspeciallywrittenSASmacros.
Documentation
This book describes the features of the Analyst Application and how to use
it to perform typical analyses, but it is not intended to teach or describe the
statistical methodology that is employed. You can find a description of the
statistical techniques used in the SAS/STAT User’s Guide and more tutorial-
style information in several Books By Users (BBU) books. The pertinent
booksarelistedinthebackofeachstatisticaltaskchapter.
Software Requirements
The Analyst Application is available in Version 8 of the SAS System for
the following platforms: Windows 95, Windows 98, Windows NT, UNIX
workstations,OS/2,OpenVMSAlpha,andVMSVAX.Requiredarethefol-
lowing:
• BaseSASsoftware,SAS/STAT,andSAS/GRAPHmustbeinstalled.
• SAS/ASSISTmustbelicensed.
• SAS/ACCESS must be installed in order to import external PC file
formats.
• SAS/IML must be installed in order to produce confidence ellipses
in the Correlations task and partial regression plots in the Linear
Regressiontask;theselectionsaregrayedoutifSAS/IMLisnotavail-
able.
vii
viii (cid:7) Acknowledgments
Chapter 1
Overview
Chapter Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
GettingStarted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BringUpAnalystandCreateaSampleDataSet . . . . . . . . . . 4
BringtheDataintotheDataTable . . . . . . . . . . . . . . . . . 5
PerformaRegressionAnalysis . . . . . . . . . . . . . . . . . . . 6
YourResults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SavingaProject . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ProjectFolders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DataTable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
UsingtheMouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
OpeningNodes . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SelectingandRemovingVariables . . . . . . . . . . . . . . . . . 16
AccessingTasksandHelp . . . . . . . . . . . . . . . . . . . . . . . 16
Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
GettingHelp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2 (cid:7) Chapter 1. Overview
ListingReports . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SummaryReports . . . . . . . . . . . . . . . . . . . . . . . . . . 21
StatisticalTasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Descriptive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TableAnalysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
HypothesisTests . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ANOVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Regression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Multivariate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SampleSize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23