Large-sample variance-covariance matrix of the unique sample correlations of
the columns of .X, using the estimator of Steiger1982;textualcSEM.
calculateCorVCV(.X)The (L x L) asymptotic variance-covariance matrix of the correlations,
L = P(P - 1)/2, in lower-triangular order.
A matrix of processed data (scaled, cleaned and ordered).
The correlations are taken in lower-triangular order of the
correlation matrix of .X, the same order used by the HTMT gradient,
so that a gradient vector and this matrix align by position for a
delta-method confidence interval, i.e.
Var(f) = t(g) %*% calculateCorVCV(.X) %*% g.