Industrial production is both highly variable and correlated across sectors. This correlation arises in part from common or aggregate shocks and from sector-specific shocks that propagate across sectors via input-output linkages or other complementarities in production. Using factor analytic...

This paper estimates a common component in many price series that has an equiproportional effect on all prices. Changes in this component can be interpreted as changes in the value of the numeraire since, by definition, they leave all relative prices unchanged. The first aim of the paper is to...