It is often the case that the value of a number of somewhat similar units (e. g., automobiles of a certain general type) is divided by the number of units in order to form a unit value price and these unit value prices are compared over two periods in order to form a unit value price index. This...

The paper illustrates how various commonly used index number formulae perform using monthly data on seasonal commodities (seven types of vegetable) that was collected by the Israeli Consumer Price Index program. The paper calculates standard Laspeyres, Paasche and Fisher indexes (fixed base and...

Indexes often incorporate various biases due to their methods of construction. The Constant Elasticity of Substitution (CES) index can potentially eliminate substitution bias without needing current period expenditure data. The CES index requires an elasticity parameter. We derive a system of...

The empirical literature on price indices consistently finds that aggregation methods have a considerable impact, particularly when scanner data are used. This paper outlines a novel approach to test for the homogeneity of goods and hence for the appropriateness of aggregation. A hedonic...

Chaining is used in index number construction to update weights and link new items into an index. However, chained indexes can suffer from, sometimes substantial, drift. The Consumer Price Index Manual (ILO, 2004) recommends the use of dissimilarity indexes to determine when chaining is...

Chaining is used in index number construction to update weights and link new items into an index. However, chained indexes can suffer from, sometimes substantial, drift. The Consumer Price Index Manual (ILO, 2004) recommends the use of dissimilarity indexes to determine when chaining is...

The impact of weekly, monthly and quarterly time aggregation on estimates of price change is examined for nineteen different supermarket item categories over a fifteen month period using scanner data. We find that time aggregation choices (the choice of a weekly, monthly or quarterly unit value...

Spanish Abstract: La medición de la variable emblemática del Sistema de Cuentas Nacionales constituye un reto estadístico formidable. En el documento se reflexiona en torno a lo que significa la propia variable teniendo presente, como telón de fondo, a la Ciencia Económica. Para entender...

With Laspeyres, Paasche and other authors such as Drobisch and Lehr, Germany made quite a promising start in index theory in the last decades of the 19th century. However, it soon lost ground after this period, which is described in this paper. The focus is not on biographies but on...