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.
Bivariate K-functions of food retailer around schools. Empirical (black) and expected (red) bivariate K-functions (left: homogeneous, right: inhomogeneous) and 95% global upper and lower confidence limits (grey) showing the clustering of 188 food retailer around 14 schools depending on the distance from schools.
