Die seit einiger Zeit einsetzenden Preissteigerungen für Getreide, Milch und Milcherzeugnisse verunsichern die Verbraucher, waren Nahrungsmittelpreise doch über Jahrzehnte stabil. Welche Entwicklungen haben zu den Preisanhebungen geführt? Für Stefan Tangermann, OECD, sind die Märkte für...

In some countries a Paasche price index based on unit values is compiled as a proxy for a true Paasche (or Laspeyres) price index on the basis of prices. This is for example the case in German foreign trade statistics. Unit values are average prices referring to a 'commodity number' (CN), that...

Summary In empirical economic research, individual prices are often aggregated into average prices of subaggregates. Then, these average prices are aggregated to produce the average price of the total aggregate. Often, such two stage procedures help to illuminate the underlying forces driving...