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  2. List of price index formulas - Wikipedia

    en.wikipedia.org/wiki/List_of_price_index_formulas

    A price index aggregates various combinations of base period prices (), later period prices (), base period quantities (), and later period quantities (). Price index numbers are usually defined either in terms of (actual or hypothetical) expenditures (expenditure = price * quantity) or as different weighted averages of price relatives ( p t ...

  3. Consumer price index - Wikipedia

    en.wikipedia.org/wiki/Consumer_price_index

    A CPI is a statistical estimate constructed using the prices of a sample of representative items whose prices are collected periodically. Sub-indices and sub-sub-indices can be computed for different categories and sub-categories of goods and services, which are combined to produce the overall index with weights reflecting their shares in the total of the consumer expenditures covered by the ...

  4. Price index - Wikipedia

    en.wikipedia.org/wiki/Price_index

    A price index (plural: "price indices" or "price indexes") is a normalized average (typically a weighted average) of price relatives for a given class of goods or services in a given region, during a given interval of time.

  5. United States Consumer Price Index - Wikipedia

    en.wikipedia.org/wiki/United_States_Consumer...

    The Consumer Price Index was initiated during World War I, when rapid increases in prices, particularly in shipbuilding centers, made an index essential for calculating cost-of-living adjustments in wages. To provide appropriate weighting patterns for the index, it reflected the relative importance of goods and services purchased in 92 ...

  6. Index (economics) - Wikipedia

    en.wikipedia.org/wiki/Index_(economics)

    In 2019 if a market basket price is 55 and the basket were to double the following year, in 2020, then the index would rise to 200. This is done by performing a simple calculation: Dividing the new year market basket price by the reference year's (otherwise known as the base year) price, and subsequently multiplying the quotient by 100.

  7. How Much Does Buying Tires at Sam’s Club Save You? - AOL

    www.aol.com/much-does-buying-tires-sam-202540437...

    Price per tire: $276.24. Price for four tires: $1,104.96. If you choose to go to Discount Tire and Service Centers, you’ll pay quite a bit more than Sam’s price. However, Discount Tire and ...

  8. Chained dollars - Wikipedia

    en.wikipedia.org/wiki/Chained_dollars

    Chained dollars, also known as "chained consumer price index" or "chained CPI," is a measure of inflation that takes into account changes in consumer behavior in response to changes in prices. It is used to adjust certain economic variables, such as tax brackets and Social Security payments, for inflation.

  9. Törnqvist index - Wikipedia

    en.wikipedia.org/wiki/Törnqvist_index

    The price index for some period is usually normalized to be 1 or 100, and that period is called "base period." A Törnqvist or Törnqvist-Theil price index is the weighted geometric mean of the price relatives using arithmetic averages of the value shares in the two periods as weights. [1]

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