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null hypotheses of multivariate normal and Student t innovations, and decompose them into skewness and kurtosis components …
Persistent link: https://www.econbiz.de/10005827087
null hypotheses of multivariate normal and Student t innovations, and decompose them into skewness and kurtosis components …
Persistent link: https://www.econbiz.de/10010884659
take skewness into account by means of certain transformations, several generalizations and extensions (HQ …
Persistent link: https://www.econbiz.de/10010299782
There are several possibilities to introduce skewness into a symmetric distribution. One of these procedures applies … density. Within this work we show that this technique incorporates a well-defined parameter of skewness, i.e. that the … generated distributions are skewed to the right (left) if the parameter of skewness takes values less (greater) than one …
Persistent link: https://www.econbiz.de/10010299790
A generalization of the hyperbolic secant distribution which allows both for skewness and for leptokurtosis was given … which has a lot of nice properties but is not able to allow for skewness. For this reason, Fischer and Vaughan (2002 …) additionally introduced a skewness parameter by means of splitting the scale parameter and showed that most of the nice properties …
Persistent link: https://www.econbiz.de/10010299799
A generalization of the hyperbolic secant distribution which allows both for skewness and for leptokurtosis was given … which has a lot of nice properties but is not able to allow for skewness. For that reason, we additionally introduce a … skewness parameter by means of splitting the scale parameter and show that most of the nice properties are preserved. Finally …
Persistent link: https://www.econbiz.de/10010299824
Generalized autoregressive conditional heteroskedasticity (GARCH) processes have become very popular as models for financial return data because they are able to capture volatility clustering as well as leptokurtic unconditional distributions which result from the assumption of conditionally...
Persistent link: https://www.econbiz.de/10010299994
We derive the statistical properties of the SNP densities of Gallant and Nychka (1987). We show that these densities, which are always positive, are more flexible than truncated Gram-Charlier expansions with positivity restrictions. We use the SNP densities for financial derivatives valuation....
Persistent link: https://www.econbiz.de/10012530160
corresponding Lagrange Multiplier-type tests into skewness and kurtosis components, from which we obtain more powerful one …
Persistent link: https://www.econbiz.de/10012530297
Multiplier-type tests into skewness and kurtosis components, from which we obtain more powerful one-sided Kuhn-Tucker versions …
Persistent link: https://www.econbiz.de/10008518040