Which Method?
Orthogonal vs Oblique
Orthogonal and oblique rotations will produce virtually
identical solutions in the case where factors are perfectly uncorrelated.
As the correlation between latent variables diverges from r =
0.00, the oblique solution will produce increasingly clearer rotated
factor patterns.
Using the following
syntax, we can try each type of rotation on the engineering data and
output a plot of the rotated factor loadings from the pattern matrix.
We use ODS to plot the results, and request the plots of the factor
loadings by including the
PLOTS = LOADINGS option
on the FACTOR statement.
ods graphics on/ width = 4in height = 6in; proc factor data = engdata nfactors = 2 method = prinit priors = SMC rotate = VARIMAX plots ...
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