For parts (a) and (b), tell who or what individuals are being studied, identify the variable of interest, and tell whether it is categorical or quantitative; then answer the question in part (c).
a. Adults were surveyed as to whether they were married, single, or divorced.
b. The New York Times reported, state by state, the divorce rate per 1,000 married adults in 2003. The lowest rate was in Massachusetts, with 5.7 divorces per 1,000 married people, and the highest was in Nevada, with 14.6 per 1,000.
c. Assume we have Census data on marital status of people in the United States. Are those people considered to be a sample or a population?