What level of measurement—nominal, ordinal, interval, or ratio—describes each of the following variables
1. Race (White, Black, Asian, and so on)
2. Order of finish in a race (first, second, third, and so on)
3. Number of children in families
4. Populations of nations
5. Attitudes toward nuclear energy (strongly approve, approve, disapprove, strongly disapprove)
6. Region of birth (Northeast, Midwest, and so on)
7. Political orientation (very liberal, somewhat liberal, somewhat conservative, very conservative)