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221.
Hashimoto Isao 《统计学通讯:理论与方法》2013,42(19):1901-1913
An extension of a result about the estimation in Karlin and Rubin is given for the following case:The sample space, the parameter space and the decision space are subsets of a multi-dimensional Euclidean space, there is defined a suitable partial ordering in each of spaces, and a probability distribution has monotone likelihood ratio with respect to the partial orderings (see Ishii, 1976). In the special case when the loss function is quadratic a simple proof of a result in Karlin and Rubin is given. Stein's estimators are discussed as examples. 相似文献
222.
《统计学通讯:理论与方法》2013,42(4):893-906
Abstract This article considers the problem of selecting the most probable cell in a multinomial distribution in the presence of a nuisance cell. Two open sequential procedures are proposed and studied. One is a two-stage procedure and the other a multistage procedure. 相似文献
223.
《Journal of Statistical Computation and Simulation》2012,82(2-3):125-143
Robust procedures are proposed for testing the equality of several group means without assuming the equality of group variances. These statistics are obtained by modifying Welch's W and Brown-Forsythe's F* using a trimmed mean and a sine-wave M estimator.Approximate distributions of these new statistics are obtained under normality. Their performances are evaluated by Monte Carlo sampling experiments under various long-tailed symmetric distributions 相似文献
224.
Kenneth J. Levy 《The American statistician》2013,67(2):99-102
Shaffer's extensions and generalization of Dunnett's procedure are shown to be applicable in several nonparametric data analyses. Applications are considered within the context of the Kruskal-Wallis one-way analysis of variance (ANOVA) test for ranked data, Friedman's two-way ANOVA test for ranked data, and Cochran's test of change for dichotomous data. 相似文献
225.
Given k=rt normal populations with a common but unknown variance consisting of t treatments applied to r different groups of units, and supposing that in each group the means are monoto-nically non-decreasing (or non-increasing), then the likelihood ratio test of homogeneity of the means in each group against the simple order alternative is considered. Critical values are provided when one observation is drawn from each of the k populations. 相似文献
226.
Ajit Chaturvedi 《统计学通讯:理论与方法》2017,46(22):11370-11382
We consider here the general class of distributions proposed by Sankaran and Gupta (2005) by zeroing in on two measures of reliability, R(t) = P(X > t) and P = P(X > Y). Thereafter, we develop point estimation for R(t) and ‘P’ and develop uniformly minimum variance unbiased estimators (UMVUES). Then we derive testing procedures for the hypotheses related to different parametric functions. Finally, we compare the results using the Monte Carlo simulation method. Using real data set, we illustrate the procedure clearly. 相似文献
227.
Sylvie Parent 《Journal of child sexual abuse》2013,22(3):322-337
The disclosure of sexual abuse in the world of sports is a process that has not been widely documented. This article presents the results of a document analysis of sport organization policies and interviews conducted with 27 sport stakeholders. The interviews focus on these stakeholders' perceptions of how the disclosure process would unfold if a case of sexual abuse were to arise in their organization and their perceptions of the actual cases experienced in the sport organizations participating in this study. The results reveal several problems affecting the disclosure of sexual abuse in sport organizations. 相似文献
228.
The maximization and minimization procedure for constructing confidence bands about general regression models is explained. Then, using an existing confidence region about the parameters of a nonlinear regression model and the maximization and minimization procedure, a generally conservative simultaneous confidence band is constructed about the model. Two examples are given, and some problems with the procedure are discussed 相似文献
229.
We consider multiple comparison test procedures among treatment effects in a randomized block design. We propose closed testing procedures based on maximum values of some two-sample t test statistics and based on F test statistics. It is shown that the proposed procedures are more powerful than single-step procedures and the REGW (Ryan/Einot–Gabriel/Welsch)-type tests. Next, we consider the randomized block design under simple ordered restrictions of treatment effects. We propose closed testing procedures based on maximum values of two-sample one-sided t test statistics and based on Batholomew’s statistics for all pairwise comparisons of treatment effects. Although single-step multiple comparison procedures are utilized in general, the power of these procedures is low for a large number of groups. The closed testing procedures stated in the present article are more powerful than the single-step procedures. Simulation studies are performed under the null hypothesis and some alternative hypotheses. In this studies, the proposed procedures show a good performance. 相似文献
230.
Hannu Nurmi 《Theory and Decision》2004,57(1):5-24
We discuss the relationships between positional rules (such as plurality and approval voting as well as the Borda count), Dodgsons, Kemenys and Litvaks methods of reaching consensus. The discrepancies between methods are seen as results of different intuitive conceptions of consensus goal states and ways of measuring distances therefrom. Saaris geometric methodology is resorted to in the analysis of the consensus reaching methods. 相似文献