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Multivariate Analyses |

You can generate tables of output from principal component rotation
by setting options in the **Rotation Options** dialog
shown in Figure 40.7
or from the **Tables** menu shown in
Figure 40.11. Select **Component Rotation** from the
**Tables** menu to display the principal component rotation dialog
shown in Figure 40.20.

You specify the number of components and type of rotation
in the **Rotation Options** dialog,
as shown in Figure 40.4.

The **Orthogonal Rotation Matrix** is the orthogonal rotation matrix
used to compute the rotated principal components from
the standardized principal components.

The **Correlations (Structure)** and **Covariances**
tables include the correlations and covariances between
the **Y** variables and the rotated principal components.

Figure 40.21 shows the
rotation matrix and correlations
and covariances between the **Y** variables and the first two
rotated principal components.

The scoring coefficients are the coefficients
of the **Y** variables used to generate rotated principal components.
The **Std Scoring Coefs** table includes the scoring coefficients
of the standardized **Y** variables, and the **Raw Scoring Coefs**
table includes the scoring coefficients
of the centered **Y** variables.

The **Communality Estimates** table gives the standardized variance
of each **Y** variable explained by the rotated principal
components.

The **Redundancy** table gives the variances
of the standardized **Y** variables explained by each rotated principal
component.

Figure 40.22 shows the scoring
coefficients
of the standardized **Y** variables, communality estimates
for the **Y** variables, and redundancy for each rotated component.

**Figure 40.21:** Rotation Matrix, Correlation, and Covariance Tables

**Figure 40.22:** Scoring Coefficients, Communality, and Redundancy Tables

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