This paper explores the distribution of the technical efficiencies across German manufacturing industries and looks at the association of technical efficiency to other economic categories. Aggregating 1995 to 2001 firm-level data yields an unbalanced panel with 241 cross-sections (industries)....

This talk will discuss the use of a number of Stata commands, some "official" and some user-contributed, in the context of working with time-series and panel data. Testing for endogeneity/exogeneity of regressors, heteroskedasticity in an instrumental variables context, and fitting regression...