Endogenous and exogenous are economic terms to describe internal and external factors respectively affecting business production, efficiency, growth and profitability. You are not able to control all ...

Several of the estimation methods supported by PROC MODEL are instrumental variables methods. There is no standard method for choosing instruments for nonlinear regression. Few econometric textbooks ...

Last week, Matt Yglesias wrote a piece arguing that Republican harping on high gas prices is unlikely to much damage Barack Obama. The fundamental point of the piece is that gas prices are endogenous: ...

The SYSLIN procedure in the SAS/ETS product can also fit certain kinds of path models and linear structural equation models. PROC CALIS differs from PROC SYSLIN in that PROC CALIS allows more ...