composite_u_matrix | R Documentation |
This function estimates the u ratio of a composite variable when at least one matrix of correlations (restricted or unrestricted) among the variables is available.
composite_u_matrix( ri_mat = NULL, ra_mat = NULL, u_vec, wt_vec = rep(1, length(u_vec)), sign_r_vec = 1 )
ri_mat |
Range-restricted correlation matrix from which the composite is to be computed (if |
ra_mat |
Unrestricted correlation matrix from which the composite is to be computed (if |
u_vec |
Vector of u ratios associated with variables in the composite to be formed. |
wt_vec |
Weights to be used in forming the composite (by default, all variables receive equal weight). |
sign_r_vec |
The signs of the relationships between the variables in the composite and the variable by which range restriction was induced. |
This is computed as:
u_composite = sqrt((t(wt * u) R_i (wt * u) / (t(wt) R_a wt))
where u_composite is the composite u ratio, u is a vector of u ratios, R_i is a range-restricted correlation matrix, R_a is an unrestricted correlation matrix, and wt is a vector of weights.
The estimated u ratio of the composite variable.
composite_u_matrix(ri_mat = matrix(c(1, .3, .3, 1), 2, 2), u_vec = c(.8, .8))
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.