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Modeling and Multivariate Methods - SAS

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Chapter 17<br />

Correlations <strong>and</strong> <strong>Multivariate</strong> Techniques<br />

Using the <strong>Multivariate</strong> Platform<br />

The <strong>Multivariate</strong> platform specializes in exploring how many variables relate to each other. The default<br />

report shows the st<strong>and</strong>ard correlation table <strong>and</strong> a scatterplot matrix. Additional options <strong>and</strong> other<br />

techniques for looking at multiple variables are available, such as the following:<br />

• a scatterplot matrix with normal density ellipses<br />

• inverse, partial, <strong>and</strong> pairwise correlations<br />

• a covariance matrix<br />

• nonparametric measures of association<br />

• simple statistics (such as mean <strong>and</strong> st<strong>and</strong>ard deviation)<br />

• an outlier analysis that shows how far a row is from the center, respecting the correlation structure<br />

• a principal components facility with several options for rotated components <strong>and</strong> a table showing rotated<br />

factor patterns <strong>and</strong> communalities<br />

• imputation of missing data

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