Evidence for nonlinear asymmetric causality in US inflation, metal, and stock returns.
Hristu-Varsakelis, D., Kyrtsou, C. (2008)
Discrete Dynamics in Nature and Society
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Hristu-Varsakelis, D., Kyrtsou, C. (2008)
Discrete Dynamics in Nature and Society
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Célia Maria Pinto Nunes, João Tiago Mexia (2003)
Discussiones Mathematicae Probability and Statistics
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F tests that are specially powerful for selected alternatives are built for sub-normal models. In these models the observation vector is the sum of a vector that stands for what is measured with a normal error vector, both vectors being independent. The results now presented generalize the treatment given by Dias (1994) for normal fixed-effects models, and consider the testing of hypothesis on the ordering of mean values and components.
Dominique Guegan (1990)
Statistique et analyse des données
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David Kraus (2009)
Kybernetika
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Transformation models for two samples of censored data are considered. Main examples are the proportional hazards and proportional odds model. The key assumption of these models is that the ratio of transformation rates (e. g., hazard rates or odds rates) is constant in time. A~method of verification of this proportionality assumption is developed. The proposed procedure is based on the idea of Neyman's smooth test and its data-driven version. The method is suitable for detecting monotonic...
Tadeusz Bednarski, Filip Borowicz (2006)
Discussiones Mathematicae Probability and Statistics
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A robust significance testing method for the Cox regression model, based on a modified Wald test statistic, is discussed. Using Monte Carlo experiments the asymptotic behavior of the modified robust versions of the Wald statistic is compared with the standard significance test for the Cox model based on the log likelihood ratio test statistic.
Sadao Tomizawa (1993)
Qüestiió
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For a 4x4 contingency table, this note gives a simple statistic to test the goodness-of-fit of the generalized palindromic symmetry (GPS) model considered by McCullagh (1978). Also an asymptotic confidence interval for a parameter of interest in the GPS model is given. Two sets of unaided vision data are used as example.
C. Neuhauser, E. Stanley (2011)
Mathematical Modelling of Natural Phenomena
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We propose a novel approach to introducing hypothesis testing into the biology curriculum. Instead of telling students the hypothesis and what kind of data to collect followed by a rigid recipe of testing the hypothesis with a given test statistic, we ask students to develop a hypothesis and a mathematical model that describes the null hypothesis. Simulation of the model under the null hypothesis allows students to compare their experimental...
Breaz, Nicoleta, Breaz, Daniel (2002)
Acta Universitatis Apulensis. Mathematics - Informatics
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Zorica Mladenović (2009)
The Yugoslav Journal of Operations Research
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