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.
Chi-square values and degrees of freedom for each year.
| 2009 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|
| Chi-square value | 0.0525 | 0.1094 | 0.257 | 0.1012 |
| υ * | 1 | 3 | 3 | 3 |
| AV * | 3.841 | 7.815 | 7.815 | 7.815 |
Note: * υ denotes degrees of freedom. * AV denotes the accepting value at 5% significant level with degrees of freedom 1 or 3.
