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Returns the maximum number of latent factors in a factor analysis model.
Ledermann(p)
The Ledermann bound.
The number of variables.
André Achim (Matlab)
P.-O. Caron (R)
Ledermann, W. (1937). On the rank of reduced correlation matrices in multiple factor analysis. Psychometrika, 2, 85–93.
Ledermann(ncol(ex_4factors_corr))
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