The New York Times reported on a study of gadgets and appliances in American homes. For each of the 17 appliances studied, it told the percentage of American homes in 2001 that had the appliance. For example, microwave ovens were in 96% of the homes and answering machines were in 78% of the homes.
a. Who or what are the individuals being studied?
b. What is the variable of interest?
c. Is the variable of interest quantitative or categorical?