نتایج جستجو برای: wald statistic and risk factors
تعداد نتایج: 17043522 فیلتر نتایج به سال:
it is not possible to understand developments of a country’s culture and civilization without knowing his believes and myths. whether it is north or south, east or west, planes or mountains, sahara or deserts, here in iran every corner includes valuable and precious treasures which are known all over the world, and cultural – historical objects which are found here adorn all well known museums...
This paper first establishes the asymptotic normality of plug-in sieve M estimators of possibly irregular functionals of semi-nonparametric time series models. We show that, even when the sieve score process is not a martingale difference, the asymptotic variances of plug-in sieve M estimators of irregular (i.e., slower than root-T estimable) functionals are the same as those for independent da...
We develop a new asymptotic theory for autocorrelation robust tests using a vector autoregressive (VAR) covariance matrix estimator. In contrast to the conventional asymptotics where the VAR order goes to in nity but at a slower rate than the sample size, we have the VAR order grow at the same rate, as a xed fraction of the sample size. Under this xed-smoothing asymptotic speci cation, the as...
In this paper we consider the Wald test statistic proposed by Watt (1979) for testing equality between the sets of regression coefficients in two linear regression models when the disturbance variances may possibly be unequal. This test can be also used as a test for a structural break. As shown by Ohtani and Toyoda (1985) and Honda and Ohtani (1986), the test based on the Wald test statistic s...
Multivariate generalizations of the Wald-Wolfowitz runs statistic and the Smirnov maximum deviation statistic for the two-sample problem are presented. They are based on the minimal spanning tree of the pooled sample points. Some null distribution results are derived, and a simulation study of power is reported. (To be published in Annals of Statistics) *Supported by Department of Energy **Supp...
abstract: research purpose: the purpose of this research is to identify academic databases assessment factors and criteria at law and political science majors. the necessity of this research is to distinguish academic databases assessment factors and criteria and to identify the most important ones and rank them in order to select an appropriate database according to students’ and faculty memb...
Abstract This study determines the associations among serum lipid profiles, risk of cardiovascular disease, and persistent organic pollutants. Using Gas chromatography technique, intensity toxic pollutant residues in samples Hypertensive patients were measured. Based on statistical analysis, effects different covariates namely pesticides, age, systolic blood pressure, diastolic profile duration...
nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...
This paper extends the distributional theory for the problem of testing for structural change in the linear model when the timing of the change is unknown, and proposes a simple method of obtaining approximate critical values for the mean-Wald test. The results apply for a very wide range of regressor types, including integrated and trending regressors, and regressors that exhibit their own str...
In this paper a robust version of the Wald test statistic for composite likelihood is 11 considered by using the composite minimum density power divergence estimator instead of the 12 composite maximum likelihood estimator. This new family of test statistics will be called Wald-type 13 test statistics. The problem of testing a simple and a composite null hypothesis is considered and 14 the robu...
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