Department of Labor Logo United States Department of Labor
Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Evaluation of CPS National Variances

Tamara S. Zimmerman


The Current Population Survey (CPS), a nationwide household survey conducted by the Bureau of the Census for the Bureau of Labor Statistics, provides official labor force estimates for the working-age noninstitutional population. Variances for the labor force estimators are based on a modified half sample replication method. Since the variances are based on a sample, the variance estimates have a considerable amount of error. One method to remove some of the sampling error in the variances is to group similar labor force items and fit a generalized variance function to the variance estimates. This paper evaluates the current variance estimation procedure and suggests another procedure for generalizing variances for national labor force statistics.