摘要:

The relative performances of randomised block, balanced lattice squares and Papadakis nearest neighbour analyses were compared on two simulated fields whose soil heterogeneity profiles were generated, one with a few evenly spaced contours and the other with many unevenly spaced contours. Four levels of random error were generated to simulate different proportions of random error and soil heterogeneity. Dummy treatments, corresponding to 7 x 7 and 11 x 11 balanced lattice squares were applied to the fields. The results from simulated experiments showed an interaction of error mean square (EMS) between size of experiment (7 x 7, 11 x 11) and levels of soil heterogeneity in the lattice analyses, but no such interaction in the Papadakis analyses. The Papadakis EMS decreased as random error decreased but at a rate depending on the map andthe ratio of soil heterogeneity to random error.

ISSN:0361-0918    

DOI:10.1080/03610918508812432

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

摘要:

In the problem of selecting the best ofkpopulations, Olkin, Sobel, and Tong (1976) have introduced the idea of estimating the probability of correct selection. In an attempt to improve on their estimator we consider anempirical Bayes approach. We compare the two estimators via analytic results and a simulation study.

ISSN:0361-0918    

DOI:10.1080/03610918508812433

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

摘要:

Let π1,…,πkdenote k treatment populations and let πkrepresent thex control population. It is assumed that data obtained from (π0, π1,…,πk) by a repeated measurements design follow a multivariate normal distribution with mean vector (π0, π1,…, πk) and covariance matrix £0. Then, if “better” is defined to mean “at least as good as” (πi> π0) we propose selection procedures for selecting a subset which includes all treatments better than the control. Due to the fact that the number of better populations is unknown, a binomial prior distribution on this unknown factor is assumed. Consequently, the exact infimum of probability of correct selection is obtained. Statistical tables to implement these procedure are extensively constructed and expected subset size is also considered.

ISSN:0361-0918    

DOI:10.1080/03610918508812434

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

ISSN:0361-0918    

DOI:10.1080/03610918508812435

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

摘要:

An algorithm is presented for computing the probability value associated with a recently-developed test of statistical inference for matched pairs. The exact probability value is provided for small samples; otherwise, an approximate probability value is computed.

ISSN:0361-0918    

DOI:10.1080/03610918508812436

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

摘要:

An algorithm is presented for computing a test statistic based on empirical probability measures that is appropriate for the two-sample problem.

ISSN:0361-0918    

DOI:10.1080/03610918508812437

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

ISSN:0361-0918    

DOI:10.1080/03610918508812438

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor

ISSN:0361-0918    

DOI:10.1080/03610918508812421

出版商:Marcel Dekker, Inc.    

年代:1985

数据来源: Taylor