Are the following variables quantitative or qualitative?
a. U.S. balance of payments.
b. Political party affiliation.
c. U.S. exports to the Republic of China.
d. Membership in the United Nations.
e. Consumer Price Index (CPI).
f. Education.
g. People living in the European Community (EC).
h. Membership in General Agreement on Tariffs and Trade (GATT).
i. Members of the U.S. Congress,
j. Social security recipients.