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.
Visual representation of the correlation matrix, Darker blue color and larger dot size indicate stronger positive correlation, while darker red means stronger negative correlation. Figure generated using the R corrplot package (https://github.com/taiyun/corrplot).
