Transcription of PRINCIPAL COMPONENT ANALYSIS - SAS Support
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PRINCIPAL COMPONENT ANALYSIS - SAS Support
1 Chapter 1 PRINCIPAL COMPONENT ANALYSISI ntroduction: The Basics of PRINCIPAL COMPONENT ANALYSIS .. 2A Variable Reduction Procedure .. 2An Illustration of Variable Redundancy .. 3 What is a PRINCIPAL COMPONENT ? .. 5 How PRINCIPAL components are computed .. 5 Number of components extracted .. 7 Characteristics of PRINCIPAL components .. 7 Orthogonal versus Oblique Solutions .. 8 PRINCIPAL COMPONENT ANALYSIS is Not Factor ANALYSIS .. 9 Example: ANALYSIS of the Prosocial Orientation Inventory .. 10 Preparing a Multiple-Item Instrument .. 11 Number of Items per COMPONENT .. 12 Minimally Adequate Sample Size .. 13 SAS Program and Output .. 13 Writing the SAS Program .. 14 The DATA step .. 14 The PROC FACTOR statement .. 15 Options used with PROC FACTOR .. 15 The VAR statement .. 17 Example of an actual program .. 17 Results from the Output.
Principal Component Analysis 3 Because it is a variable reduction procedure, principal component analysis is similar in many respects to exploratory factor analysis.
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