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.
Comparison of line and dots. a) Distribution of unsigned errors in setting rod to vertical (n = 66); b) distribution of absolute errors in setting rod to horizontal with rod as dots, (n = 60). In both cases black bars = rod as line, grey bars = rod as dots.
