The note examines a generalization of a theorem of Bortkiewicz which relates the difference between a Paasche and a Laspeyres price index to a covariance between price and quantity relatives. The generalized theorem is used to demonstrate a number of interesting special applications. It turns...

The present paper explores, both theoretically and empirically, the bias of unit value indices as opposed to genuine price indices in foreign trade. An analysis of German data reveals conceptual and methodological differences, and their impact on economic indicators, namely imported inflation,...

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...

The article aims to capture the main effects subsequent to Romania’s accession to UE-27 and integration in the common market, upon the external performances of the agricultural products. The analysis comprised both the evolution and structure of the commercial flows, determinant factors of the...

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...