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 lower edge of the box represents quartile 1, the upper edge of the box represents quartile 3, and the middle line through the box represents the median. Dots represent outliers.
