The integrated micro data files of the March CPS produced by the University of Minnesota were analyzed. Additional documentation ... the Pew Research Center survey are based on telephone interviews ...

Type of data source Describe the types of data source (for example ... whether any other documentation is available. Provide hyperlinks or citations to key publications, if available. If the dataset ...

The census bureau draws a random sample of 5 percent of these interviews and creates a data set that is then made available to researchers. The Census Summary Files also draw data from the long form ...