Version 2

The data are not weighted, however, the data contains a weight variable (WEIGHT) that should be used in analyzing the data. According to the CBS News Web site, the data were weighted to match the United States Census Bureau breakdowns on age, sex, race, education, and region of the country. The data were also adjusted for the fact that people who share a telephone with others have less chance to be contacted than people who live alone and have their own telephones, and that households with more than one telephone number have more chances to be called than households with only one telephone number.