Hypothesis Testing in Demand Systems: Some Examples of Size Corrections Using Edgeworth Approximations
需求系统假设检验:基于 Edgeworth 近似的检验水平修正
A size correction to adjust the critical values of asymptotic χ 2 tests in a SUR context has been developed by Rothenberg and verified by Phillips. The adjustment centers the distribution of the observed test statistic so that it coincides more closely with its hypothetical distribution. The correction itself is an approximation to O ( T −1 ), and while the adjustment should be superior to the asymptotic test (no adjustment) in small-sample situations, its performance can be…