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) Classification with k = 6. (B) Classification with k = 9. Some jitter was added to allow the individual points to be more discernable within boxed regions.
