Purchasing Power Standard (PPS) shall mean the artificial common reference currency unit used in the European Union to express the volume of economic aggregates for the purpose of spatial comparisons in such a way that price level differences between countries are eliminated. Economic volume aggregates in PPS are obtained by dividing their original value in national currency units by the respective PPP. I PPS thus buys the same given volume of goods and services in all countries, whereas different amounts of national currency units are needed to buy this same volume of goods and services in individual countries, depending on the price level.
Tartaruga, assim sendo, a paridade do poder de compra (ppp) é usada no cálculo, mas difere no conceito.
Ah, e já agora, aqui fica a "definição oficial" para PPP - paridade do poder de compra que dá tb uma chega à leitura do PPS.
Purchasing Power Parity (PPP) is a currency conversion rate that converts economic indicators expressed in a national currency to an artificial common currency that equalises the purchasing power of different national currencies. In other words, PPP is both a price deflator and a currency converter; it eliminates the differences in price levels between countries in the process of conversion to an artificial common currency, called Purchasing Power Standard (PPS).
A fonte disto é um site engraçado que é a Eurostat Concepts and Definitions Database. O link é
http://forum.europa.eu.int/irc/dsis/cod ... /all.htm#P
U2, só agira vi o teu pedido de ajuda, sorry...