Price index | ideal cost of living index中文
Apriceindex(plural:"priceindices"or"priceindexes")isanormalizedaverage(typicallyaweightedaverage)ofpricerelativesforagivenclassofgoodsorservicesinagivenregion,duringagivenintervaloftime.Itisastatisticdesignedtohelptocomparehowthesepricerelatives,takenasawhole,differbetweentimeperiodsorgeographicallocations.Priceindiceshaveseveralpotentialuses.Forparticularlybroadindices,theindexcanbesaidtomeasuretheeconomysgeneralpriceleveloracostofliving.Morenarrowpriceindicescanhelpproducerswithbusinesspla...
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. It is a statistic designed to help to compare how these price relatives, taken as a whole, differ between time periods or geographical locations.
Price indices have several potential uses. For particularly broad indices, the index can be said to measure the economys general price level or a cost of living. More narrow price indices can help producers with business plans and pricing. Sometimes, they can be useful in helping to guide investment.
Some notable price indices include:
History of early price indices[edit]No clear consensus has emerged on who created the first price index. The earliest reported research in this area came from Welshman Rice Vaughan, who examined price level change in his 1675 book A Discourse of Coin and Coi...