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.
A noise or error source is assumed to be in the channel between the sender represented by the ‘True Rankin’ score and the receiver represented by the ‘Observed Rankin’ score.
