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Random Cell Chi-Square Diagnostic Tests For Econometric Models: Ii. Theory, Donald W.K. Andrews
Random Cell Chi-Square Diagnostic Tests For Econometric Models: Ii. Theory, Donald W.K. Andrews
Cowles Foundation Discussion Papers
This paper extends the Pearson chi-square testing method to non-dynamic parametric econometric models, in particular, to models with covariates. The paper establishes the asymptotic distribution of the test statistic under the null and local alternatives, when the test statistic is based on data-dependent random cells of a general form, and on an arbitrary asymptotically normal estimator. These results are attained by extending recent probabilistic results for the weak convergence of empirical processes indexed by sets. The chi-square test that is introduced can be used to test goodness-of-fit of a parametric model, as well as to test particular aspects of the …
Asymptotic Results For Generalized Wald Tests, Donald W.K. Andrews
Asymptotic Results For Generalized Wald Tests, Donald W.K. Andrews
Cowles Foundation Discussion Papers
This note presents conditions under which a quadratic form based on a g-inverted weighting matrix converges to a chi-square distribution as the sample size goes to infinity. Subject to fairly weak underlying conditions, a necessary and sufficient condition is given for this result. The result is of interest, because it is needed to establish asymptotic significance levels and local power properties of generalized Wald tests (i.e., Wald tests with singular limiting covariance matrices). Included in this class of tests are Hausman specification tests and various goodness of fit tests, among others. The necessary and sufficient condition is relevant to procedures …