Classify each of the following qualitative variables as ordinal or nominative. Explain your answers.
Qualitative Variable Categories
Personal computer operating system.. Windows XP Windows Vista Windows 7 Windows 8
Motion picture classifications... G PG PG- 13 R NC- 17 X
Level of education ....... Elementary Middle school High school College Graduate school
Rankings of the top 10 college football teams. 1 2 3 4 5 6 7 8 9 10
Exchange on which a stock is traded.. AMEX NYSE NASDAQ Other
Zip code ............. 45056 90015 etc.