Moment estimate version of correlation coefficient in a cluster in a three-level nested design.
rhosch(ahat, school, section)A vector of scores. Wilcoxon scores are used in the package.
A vector of clusters.
A vector of subclusters.
Y. K. Bilgic. Rank-based estimation and prediction for mixed effects models in nested designs. 2012. URL http://scholarworks.wmich.edu/dissertations/40. Dissertation.