-
作者:FISHER, NI; LEWIS, T
作者单位:Open University - UK
摘要:This paper considers the problem of forming a pooled estimate of the common mean direction of several circular or spherical populations with possibly differing dispersions, based on samples from each population. Methods for obtaining approximate confidence cones for the mean direction of a single circular or spherical population are developed, than applied to several examples [including paleo climatology].
-
作者:AFSARINEJAD, K
-
作者:KRZANOWSKI, WJ
摘要:A general form of the location and model is considered for mixed continuous and categorical variables observed in a number of different populations, and some special cases of practical interest are cited. The distance between any 2 populations is derived for each of these models. Estimation of parameters in these distance measures is discussed, and the methods are illustrated by application to previously published data.
-
作者:POSKITT, DS; TREMAYNE, AR
-
作者:HIROTSU, C
摘要:Row-wise and/or column-wise multiple comparison procedures are developed for elucidating the association involved in various types of 2-way contingency tables. They include multinomials with ordered categories and paired comparison data arranged in a 2-way table.
-
作者:BEDRICK, EJ
摘要:Holt. Scott and Ewings (1980) propose a modified Pearson .CHI.2 statistic for testing independence in a 2-way table of survey data. The multiplier of .CHI.2 needed for this modification is a weighted sum of cell and marginal cell design effects. A similar adjustment of the .CHI.2 and G2 statistics is possible whenever log linear models with closed form estimates are fitted to a cross-classified table of survey data.
-
作者:TONG, H
-
作者:MCLEISH, D; TOSH, D
作者单位:Acadia University
摘要:Suppose a low dose of a drug is administered and, if no response is observed, increase this dose by a fixed amount which is administered to a 2nd experimental subject. This procedure continues until, at some dose level, a response is finally observed. This whole sequence may be repeated. The features of an experimental design of this kind for estimating the dose at which the expected response is small were investigated. This design is highly efficient when the the number of responses, e.g., de...
-
作者:BERGMAN, SW; TURNBULL, BW
作者单位:Cornell University
摘要:The scheduling of inspection times in a life testing experiment when testing is destructive is considered. One application is to animal carcinogenicity tests where it is desired to find serial sacrifice schedules which allow efficient estimation of the onset time distribution for a tumor which is assumed irreversible, nonlethal and occult, i.e. detectable only at death. A class of designs are introduced and their properties are discussed. It is shown how to construct a design in this class tha...
-
作者:TAVARE, S; ALTHAM, PME
作者单位:University of Cambridge