作业帮Retail Price IndexRPI的构成 管理 用途 变化
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Retail Price IndexRPI的构成 管理 用途 变化
Retail Price Index
RPI的构成 管理 用途 变化
Retail Price IndexRPI的构成 管理 用途 变化
Retail price index,often known as the consumer price index,a statistical measurement of inflation.
The Retail Price Index (RPI) is a measure of inflation constructed as follows:
1.A base year or starting point is chosen.This becomes the standard against which price changes are measured
2.A list of items bought by an average family is drawn up.This is facilitated by the Family Expenditure Survey
3.A set of weights are calculated,showing the relative importance of the items in the average family budget - the greater the expenditure,the greater the weight.
4.The price of each item is multiplied by the weight,adjusting the item's size in proportion to its importance
5.The price of each item must be found in both the base year and the year of comparison (or month)
This enables the percentage change to be calculated over the desired time period.
Variations on the RPI include the RPIX,which removes the cost of mortgage interest payments and RPIY,which excludes indirect taxes (VAT),local authority taxes as well as mortgage interest payments.