CPI for all items unchanged in November as gasoline falls, shelter and food rise
Source: U.S. Bureau of Labor Statistics
Economic News Release USDL-18-1938
Consumer Price Index Summary
Transmission of material in this release is embargoed until 8:30 a.m. (EST) December 12, 2018
Technical information: (202) 691-7000 cpi_info@bls.gov www.bls.gov/cpi
Media Contact: (202) 691-5902 PressOffice@bls.gov
CONSUMER PRICE INDEX - NOVEMBER 2018
The Consumer Price Index for All Urban Consumers (CPI-U) was unchanged in November on a seasonally adjusted basis after rising 0.3 percent in October, the U.S. Bureau of Labor Statistics reported today. Over the last 12 months, the all items index increased 2.2 percent before seasonal adjustment.
The gasoline index declined 4.2 percent in November, offsetting increases in an array of indexes including shelter and used cars and trucks. Other major energy component indexes were mixed, with the index for fuel oil falling but the indexes for electricity and natural gas rising. The food index rose in November, with the indexes for food at home and food away from home both increasing.
The all items less food and energy index increased 0.2 percent in November. Along with the indexes for shelter and used cars and trucks, the indexes for medical care, recreation, and water and sewer and trash collection also increased. The indexes for wireless telephone services, airline fares, and motor vehicle insurance declined in November.
The all items index increased 2.2 percent for the 12 months ending November, compared to a 2.5-percent increase for the period ending October. The all items less food and energy index rose 2.2 percent in November. The energy index increased 3.1 percent for the 12 months ending November; this was its smallest 12-month increase since the period ending June 2017. The food index rose 1.4 percent over the last 12 months.
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The Consumer Price Index for December 2018 is scheduled to be released on Friday, January 11, 2019, at 8:30 a.m. (EST).
Read more: https://www.bls.gov/news.release/cpi.nr0.htm
It goes on to say, in a great deal of explanatory information:
Technical Note
Brief Explanation of the CPI
The Consumer Price Index (CPI) measures the change in prices paid by consumers for goods and services. The CPI reflects spending patterns for each of two population groups: all urban consumers and urban wage earners and clerical workers. The all urban consumer group represents about 93 percent of the total U.S. population. It is based on the expenditures of almost all residents of urban or metropolitan areas, including professionals, the self-employed, the poor, the unemployed, and retired people, as well as urban wage earners and clerical workers. Not included in the CPI are the spending patterns of people living in rural nonmetropolitan areas, farming families, people in the Armed Forces, and those in institutions, such as prisons and mental hospitals. Consumer inflation for all urban consumers is measured by two indexes, namely, the Consumer Price Index for All Urban Consumers (CPI-U) and the Chained Consumer Price Index for All Urban Consumers (C-CPI-U).
The Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) is based on the expenditures of households included in the CPI-U definition that meet two requirements: more than one-half of the household's income must come from clerical or wage occupations, and at least one of the household's earners must have been employed for at least 37 weeks during the previous 12 months. The CPI-W population represents about 29 percent of the total U.S. population and is a subset of the CPI-U population.
The CPIs are based on prices of food, clothing, shelter, fuels, transportation, doctors' and dentists' services, drugs, and other goods and services that people buy for day-to-day living. Prices are collected each month in 75 urban areas across the country from about 5,000 housing units and approximately 22,000 retail establishments (department stores, supermarkets, hospitals, filling stations, and other types of stores and service establishments). All taxes directly associated with the purchase and use of items are included in the index. Prices of fuels and a few other items are obtained every month in all 75 locations. Prices of most other commodities and services are collected every month in the three largest geographic areas and every other month in other areas. Prices of most goods and services are obtained by personal visits or telephone calls by the Bureau's trained representatives.
In calculating the index, price changes for the various items in each location are aggregated using weights, which represent their importance in the spending of the appropriate population group. Local data are then combined to obtain a U.S. city average. For the CPI-U and CPI-W, separate indexes are also published by size of city, by region of the country, for cross-classifications of regions and population-size classes, and for 23 selected local areas. Area indexes do not measure differences in the level of prices among cities; they only measure the average change in prices for each area since the base period. For the C-CPI-U, data are issued only at the national level. The CPI-U and CPI-W are considered final when released, but the C-CPI-U is issued in preliminary form and subject to three subsequent quarterly revisions.
The index measures price change from a designed reference date. For most of the CPI-U and the CPI-W, the reference base is 1982-84 equals 100. The reference base for the C-CPI-U is December 1999 equals 100. An increase of 7 percent from the reference base, for example, is shown as 107.000. Alternatively, that relationship can also be expressed as the price of a base period market basket of goods and services rising from $100 to $107.
Sampling Error in the CPI
The CPI is a statistical estimate that is subject to sampling error because it is based upon a sample of retail prices and not the complete universe of all prices. BLS calculates and publishes estimates of the 1-month, 2-month, 6-month, and 12-month percent change standard errors annually for the CPI-U. These standard error estimates can be used to construct confidence intervals for hypothesis testing. For example, the estimated standard error of the 1-month percent change is 0.03 percent for the U.S. all items CPI. This means that if we repeatedly sample from the universe of all retail prices using the same methodology, and estimate a percentage change for each sample, then 95 percent of these estimates will be within 0.06 percent of the 1-month percentage change based on all retail prices. For example, for a 1-month change of 0.2 percent in the all items CPI-U, we are 95 percent confident that the actual percent change based on all retail prices would fall between 0.14 and 0.26 percent. For the latest data, including information on how to use the estimates of standard error, see https://www.bls.gov/cpi/tables/variance-estimates/home.htm.
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Contact Information
For additional information about the CPI visit www.bls.gov/cpi or contact the CPI Information and Analysis Section at 202-691-7000 or cpi_info@bls.gov.
For additional information on seasonal adjustment in the CPI visit
https://www.bls.gov/cpi/seasonal-adjustment/home.htm or contact the CPI seasonal adjustment section at 202-691-6968 or cpiseas@bls.gov.
Information from this release will be made available to sensory impaired individuals upon request. Voice phone: 202-691-5200; Federal Relay Service: 1-800-877-8339.
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See our interactive graphics on today’s new Consumer Price Index data http://go.usa.gov/x9mMG #CPI #BLSdata #DataViz
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