The empirical literature on price indices consistently finds that aggregation methods have a considerable impact … the appropriateness of aggregation. A hedonic regression framework is used to test for item homogeneity across four … supermarket chains and across stores within each of these supermarket chains. We find empirical support for the aggregation of …

. Persistence of seventy-five inflation series at various aggregation levels are examined by estimating models that allow long …. Thus, the paper finds evidence of spurious long memory due to aggregation …

aggregation biases estimates of monetary policy transmission. We argue that the information mismatch between private agents and … the econometrician —the source of temporal aggregation bias —is equally important as the more studied mismatch between … policy model and show how temporal aggregation bias can exacerbate initial impulse response functions. Because our modeling …

Simple sum monetary aggregates are based on accounting conventions and have no aggregation theoretic foundations in … economic theory. In contrast, Divisia monetary aggregates are directly derived from aggregation and index number theory. Credit … assets and liabilities. However, microeconomic aggregation theory aggregates over service flows, not stocks, regardless of …