摘要:

AbstractWe estimate the Residual Volume, a spirometric parameter, by use of four continuous and four categorical variables. The estimation is done using distance‐based regression, which allows to construct the predicting regression equation from mixed‐type explanatory variables. The additionally introduced categorical variables improve essentially the goodness of fit of the regression equat

ISSN:0323-3847    

DOI:10.1002/bimj.4710370202

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

ISSN:0323-3847    

DOI:10.1002/bimj.4710370203

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractThis paper discusses tests for homogeneity of row‐variances in a two‐way classification. Parametric tests for this problem are shown to be highly sensitive to departures from the normality assumption. Levene's robust tests tend to be rather liberal when the number of rows exceeds the number of columns. A modification is suggested which improves the approximation for this situation, while retaining the desirable robustness prope

ISSN:0323-3847    

DOI:10.1002/bimj.4710370204

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractThe higher order mating designs like triallel and double crosses have been found to be useful in exploiting the epistatic gene action. However, it is equally important to note that enormous amount of resources are necessary to develop triallel crosses even for a small number of genetic linespas it involves developingp(p—1)(p—2)/2 distinct three way hybrids. A simple answer to this problem is to consider a sample of triallel crosses known as partial triallel crosses (PTC) which retains the salient properties of triallel crosses at less cost. In this paper we consider the estimation of variance components (design and genetic) based on partial triallel mating desi

ISSN:0323-3847    

DOI:10.1002/bimj.4710370205

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

ISSN:0323-3847    

DOI:10.1002/bimj.4710370206

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractParallels between the discrete group‐testing model and some closely‐related continuous models are elucidated. It is shown that in both the discrete and continuous cases, the maximum likelihood estimators may suffer from similar lack of robustness. Isotonic regression and maximum likelihood estimation were therefore compared for a modified group testing mo

ISSN:0323-3847    

DOI:10.1002/bimj.4710370207

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

ISSN:0323-3847    

DOI:10.1002/bimj.4710370208

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractAn experimental design problem is considered for the analysis of long‐term selection experiments with nonlinear regression models. For a 3‐parametric exponential regression function whose parameters have also a reasonable biological interpretation approximate formulas for the determination of the necessary number of observations at each generation are constructed in such a way that the half expected length of an (1 — α)‐confidence interval for a chosen parameter is not greater than a given value. In this sense the accuracy of the parameter estimators can be d

ISSN:0323-3847    

DOI:10.1002/bimj.4710370209

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractWe present the idea of using multiresponse incomplete block designs when not all responses can be observed in all experimental units. For a special class of such designs, in which partial designs are PBB designs, a method for estimating natural treatment contrast is given. We also consider the problem of testing the hypotheses concerning the natural and any estimable treatment contrasts. For testing this hypothesis the Wald statistics, being asymptotically chi‐square distributed, is propose

ISSN:0323-3847    

DOI:10.1002/bimj.4710370210

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY

摘要:

AbstractIn the study of spatial patterns, the statisticI' = (n— 1)s2/xwas commonly used. In this paper, we found thatx—s2has an approximated normal distribution with zero mean if thexi's(i= 1 ton) are independent identically distributed Poisson variables. Based on this conclusion, the hypothesis that a point pattern is completely random can be tested directly. And a method for the test of spatial patterns was proposed which can be sued as an alternative to the Chi‐square based dispersion index

ISSN:0323-3847    

DOI:10.1002/bimj.4710370211

出版商:WILEY‐VCH Verlag    

年代:1995

数据来源: WILEY