posted by Tykrane .
A student was study the political party preference of a university's student population. The survey instrument asked student to identify themselves as a democrat or a republican. This question is flawed because:
A. students generally don't know their political preferences.
B. the categories are generally mutually exclusive.
C. the catergories are not exhaustive.
D. political preference is a continuous variable.
I vote for C because the survey doesn't include independents or third parties.