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.
Dummy coding algorithm of polytomous variables used in the regression.
| Variable | New Variable 1 (X1) | New Variable 2 (X2) | New Variable 3 (X3) |
|---|---|---|---|
| Region | |||
| 1 Midwest | 1 | 0 | 0 |
| 2 West | 0 | 1 | 0 |
| 3 Northeast | 0 | 0 | 1 |
| 4 South | 0 | 0 | 0 |
| Religion | |||
| 1 Christianity | 0 | 0 | - |
| 2 Atheist | 0 | 1 | - |
| 3 Others | 1 | 0 | - |
| Political affiliation | |||
| 1 Democrat | 1 | 0 | - |
| 2 Republicans | 0 | 0 | - |
| 3 Others | 0 | 1 | - |
