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.
The coloured regions in the figure correspond to a threshold probability of 0.5. The dashed and solid line show the identity and total least squares line, respectively.
