为什么不讨论正态性假设？ William H.Greene(2003),Econometric Analysis In most cases,the zero mean assumption is not restrictive. In view ofour description of the source of the disturbances,the conditions of the central limit theorem will generally apply,at least approximately,and the normality assumption will be reasonable in most settings.Except in those cases in which some alternative distribution is assumed,the normality assumption is probably quite reasonable.为什么不讨论正态性假设？ William H. Greene(2003), Econometric Analysis • In most cases, the zero mean assumption is not restrictive. • In view of our description of the source of the disturbances, the conditions of the central limit theorem will generally apply, at least approximately, and the normality assumption will be reasonable in most settings. Except in those cases in which some alternative distribution is assumed, the normality assumption is probably quite reasonable