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NOTES

Source: U.S. Bureau of Labor Statistics  

Release: Consumer Price Index  

Units:  Index 1982-1984=100, Seasonally Adjusted

Frequency:  Monthly

Notes:

The Consumer Price Index for All Urban Consumers: All Items (CPIAUCSL) is a measure of the average monthly change in the price for goods and services paid by urban consumers between any two time periods. It can also represent the buying habits of urban consumers. This particular index includes roughly 88 percent of the total population, accounting for wage earners, clerical workers, technical workers, self-employed, short-term workers, unemployed, retirees, and those not in the labor force.

The CPIs are based on prices for food, clothing, shelter, and fuels; transportation fares; service fees (e.g., water and sewer service); and sales taxes. Prices are collected monthly from about 4,000 housing units and approximately 26,000 retail establishments across 87 urban areas. To calculate the index, price changes are averaged with weights representing their importance in the spending of the particular group. The index measures price changes (as a percent change) from a predetermined reference date. In addition to the original unadjusted index distributed, the Bureau of Labor Statistics also releases a seasonally adjusted index. The unadjusted series reflects all factors that may influence a change in prices. However, it can be very useful to look at the seasonally adjusted CPI, which removes the effects of seasonal changes, such as weather, school year, production cycles, and holidays.

The CPI can be used to recognize periods of inflation and deflation. Significant increases in the CPI within a short time frame might indicate a period of inflation, and significant decreases in CPI within a short time frame might indicate a period of deflation. However, because the CPI includes volatile food and oil prices, it might not be a reliable measure of inflationary and deflationary periods. For a more accurate detection, the core CPI (CPILFESL) is often used. When using the CPI, please note that it is not applicable to all consumers and should not be used to determine relative living costs. Additionally, the CPI is a statistical measure vulnerable to sampling error since it is based on a sample of prices and not the complete average.

For more information on the consumer price indexes, see:
Bureau of Economic Analysis. "CPI Detailed Report." 2013.
Handbook of Methods
Understanding the CPI: Frequently Asked Questions

Suggested Citation:

U.S. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: All Items [CPIAUCSL], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CPIAUCSL, August 18, 2019.

Source: U.S. Bureau of Labor Statistics  

Release: Producer Price Index  

Units:  Index 1982=100, Seasonally Adjusted

Frequency:  Monthly

Notes:

In January 2014, the Producer Price Index (PPI) transitioned from the Stage of Processing (SOP) aggregation system to the Final Demand-Intermediate Demand (FD-ID) aggregation system. Effective with the January 2016 Producer Price Index (PPI) data release in February 2016, PPI ceased the calculation and publication of the Stage of Processing (SOP) versions of these indexes. Going forward, data users wishing to track prices for finished goods, processed goods for intermediate demand (intermediate goods), unprocessed goods for intermediate demand (crude goods), or any of the former SOP-based component indexes will need to use the corresponding index codes from the Final Demand-Intermediate Demand (FD-ID) aggregation system. The FD-ID aggregation system webpage provides a table listing the SOP indexes and their concordant FD-ID indexes. https://www.bls.gov/ppi/fdidconcordance.htm

The data series has transitioned from the Stage of Processing (SOP) aggregation system to the Final Demand-Intermediate Demand (FD-ID). All Stage of Processing (SOP) data series have been discontinued. Please see the replacement for the data series at: https://fred.stlouisfed.org/series/WPSFD49207

Suggested Citation:

U.S. Bureau of Labor Statistics, Producer Price Index by Commodity for Finished Goods (DISCONTINUED) [PPIFGS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PPIFGS, August 18, 2019.

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