Asymptotic Equivalence of an Expansion Test and an Approximate Degrees of Freedom Test
展开检验与近似自由度检验的渐近等价性
An expansion test and an approximate degrees of freedom test of a linear hypothesis in a linear model with unequal but independently estimated error variances are shown to be equivalent to terms of order nj-1, where the nj's are the degrees of freedom of the variance estimators.