摘要:

This article describes the increasing involvement of the American Statistical Association (ASA) in international activities, and in particular, the events leading to the formation of the ASA Committee on International Relations in Statistics. ASA's emerging international program, which is currently being considered by this committee, is discussed.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479325

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Seven important topics in statistical consulting are suggested as focal points for a study of the consulting literature. We have found that reading and discussing a few papers relevant to each topic, and considering how these topics are related, can be meaningfully integrated into training applied statisticians.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479326

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Many of the more useful and powerful nonparametric procedures may be presented in a unified manner by treating them as rank transformation procedures. Rank transformation procedures are ones in which the usual parametric procedure is applied to the ranks of the data instead of to the data themselves. This technique should be viewed as a useful tool for developing nonparametric procedures to solve new problems.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479327

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479328

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479329

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479330

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Recent work, spearheaded by Charles Dunnett (1980a), leads to the conclusion that the Tukey-Kramer (TK) method (popularly known as “Kramer's Method”) is the recommended multiple comparisons procedure for the simultaneous estimation of all pairwise differences of means in an imbalanced one-way ANOVA design with homogeneous variances. Nine other multiple comparisons methods are compared to each other and to the TK method using the criteria of conservativeness, narrowness of confidence intervals, robustness, and ease of use. The degree of superiority of the TK method over these methods, especially over the popular Bonferroni method, is sufficient to warrant recommending its use. Because of the lack of robustness of the TK method in heterogeneous variance cases, other methods are recommended.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479331

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479332

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

For the two-sided Studenttconfidence interval for the mean of a normal distribution there is, for any sample size, a sufficiently large confidence level that ensures that the interval covers all the observations; there are also sufficiently small confidence levels guaranteeing, respectively, that (a) the interval does not cover all the observations and (b) the interval lies within the extreme observations. Necessary and sufficient conditions are also obtained for the width of the confidence interval to always exceed the sample range, as well as for the reverse inequality. Some implications of the results are discussed.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479333

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

It does not appear to be widely known that the moment-generating functionMx(t) contains information about negative as well as positive integer moments. Proofs of this are provided, extensions are indicated, and earlier literature deriving and using this type of result is briefly noted. Some examples are given.

ISSN:0003-1305    

DOI:10.1080/00031305.1981.10479334

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor