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.

Estimating Components of Variance of Price Change from a Scanner‐Based Sample

Sylvia G. Leaver and David Larsen


We present estimates of components of variance of price change for an experimental scanner-based Consumer Price Index for cereal for several publication areas. Components of variance for 1-, 6-, and 12-month lags are computed using a weighted restricted maximum likelihood estimation method. Estimates are contrasted among publication areas using two different random effects models, and findings are discussed with respect to approaches to sample design.