An official website of the United States government
Here's how you know
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.
Intercept (left plot) and slope (right plot) function estimates for the empirical data. In each plot, the solid line represents the estimated intercept or slope function, and the dotted lines represent the 95% confidence interval of the estimated function.