Handbook of Statistics 11This volume serves as a source, reference and teaching supplement in econometrics, the branch of economics which is concerned with statistical methods applied to the empirical study of economic relationships. The chapters comprise comprehensive and up-to-date surveys of developments in various aspects of econometrics. A wide variety of applications of statistical methodology to econometric problems are covered and written at a level intended for professional econometricians and statisticians, as well as advanced graduate students in econometrics.