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A possible drawback of the ordinary correlation coefficient p for two real random variables X and Y is that zero … correlation does not imply independence. In this paper we introduce a new correlation coefficient p* which assumes values between …
Persistent link: https://www.econbiz.de/10014057932
The information contained in PP-plots is transformed into a single number. The resulting Harmonic Mass (HM) index is distribution free and its sample counterpart is shown to be consistent. For a wide class of CDFs the exact analytical expression of the distribution of the sample HM index is...
Persistent link: https://www.econbiz.de/10011348352
This paper develops a consistent heteroskedasticity robust Lagrange Multiplier (LM) type specification test for semiparametric conditional mean models. Consistency is achieved by turning a conditional moment restriction into a growing number of unconditional moment restrictions using series...
Persistent link: https://www.econbiz.de/10012862378
This study compares the size and power of autoregressive conditional heteroskedasticity (ARCH) tests that are robust to the presence of a misspecified conditional mean. The approaches employed are based on two nonparametric regressions for the conditional mean: an ARCH test with a...
Persistent link: https://www.econbiz.de/10013183738
In a high dimensional linear regression model, we propose a new procedure for testing statistical significance of a subset of regression coefficients. Specifically, we employ the partial covariances between the response variable and the tested covariates to obtain a test statistic. The resulting...
Persistent link: https://www.econbiz.de/10013082410
Commonly used tests to assess evidence for the absence of autocorrelation in a univariate time series or serial cross-correlation … heteroskedasticity in the series. Related extensions are provided for testing cross-correlation at various lags in bivariate time series … spurious evidence of serial correlation. …
Persistent link: https://www.econbiz.de/10012243279
instruments tends to zero and as the correlation between the disturbances of the structural and reduced-form equations tends to …
Persistent link: https://www.econbiz.de/10011411381
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