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.
Simulation results. Plot of fitted probabilities (black dots) versus their true values (indicated by dashed lines) for the four strata for N = 100, 1000, and 5000, different dispersions of the means, and different assumptions about the strata probabilities.
