Figure 8.
Correlation matrix with Spearman used for test at level .05, with insignificant coefficients left blank. The matrix is ordered by a hierarchical clustering algorithm. Blue – positive correlation, red – negative correlation.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.