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.

Producer Price Indexes

Variance Estimates for the Producer Price Index (PPI)

Measures of uncertainty caused by using a sample to calculate PPI data

The Producer Price Index (PPI) program began publishing variance estimates in 2016 based on data for 2015. The median absolute value of the percent change is provided as the reference statistic and the corresponding median standard error is provided as the measure of variance. Data for each PPI in the report includes

  • 1-month median absolute percent change for the previous calendar year
  • 1-month median standard error for the previous calendar year
  • 12-month median absolute percent change for the previous calendar year
  • 12-month median standard error for the previous calendar year

The standard error (SE), a commonly used measure of sampling variability, may be used to calculate a confidence interval around the corresponding sample percent change. The SE estimates the sample distribution, or spread, of the sample estimates from the true population value.

Methods for Calculating PPI Variance Estimates

For further information, contact the PPI Section of Index Analysis and Public Information, at or (202) 691-7705.

2022 PPI Variance Report

2021 PPI Variance Report

2020 PPI Variance Report

2019 PPI Variance Report

2018 PPI Variance Report

2017 PPI Variance Report

2016 PPI Variance Report

2015 PPI Variance Report

The release of PPI variance estimates for 2015 includes only data for selected high-level PPIs from the Final Demand‐Intermediate Demand (FD‐ID) Aggregation System. The FD‐ID system is the primary method for analyzing aggregate producer inflation.

(How to View PDF Files)


Last Modified Date: July 21, 2023