Zobrazeno 1 - 10
of 16
pro vyhledávání: '"David G. Hoel"'
Autor:
David G. Hoel, Gerald R. Chase
Publikováno v:
Biometrika. 62:329-334
SUMMARY The effect of small errors of dilution is shown to be sizeable when serial dilutions are required to estimate particle concentrations. Optimal dilution designs are given. The error effect and optimal design are also investigated for ratios of
Publikováno v:
Biometrika. 62:195-200
We examine results produced by a new likelihood stopping rule for terminating clinical trials, designed to choose the better of two competing dichotomous treatments, or to decide that they are equal. A method for adaptive assignment is also discussed
Autor:
Takashi Yanagawa, David G. Hoel
Publikováno v:
Journal of the American Statistical Association. 81:1095-1099
The testing of chemicals for carcinogenic activity in lifetime rodent bioassays has produced a large amount of data on a few strains of mice and rats. Because of the use of fixed protocols in repeated experiments, the opportunity presents itself for
Autor:
David G. Hoel, Robert I. Jennrich
Publikováno v:
Journal of Statistical Computation and Simulation. 20:311-322
Life table analysis techniques in epidemiology depend upon the asymptotic properties of the statistical test methods employed. In some instances, the statistical procedures indicate highly significant results which are, in reality, unjustified. The p
Autor:
Kenny S. Crump, David G. Hoel
Publikováno v:
Biometrika. 61:237-252
SUMMARY A number of mathematical models for cell populations in which mutations are occurring are studied and compared by viewing the models as filtered Poisson processes. Based upon these models, a statistical analysis is given of the mutant accumul
Autor:
Kantilal M. Patel, David G. Hoel
Publikováno v:
Journal of the American Statistical Association. 68:615-620
A measure of interaction in factorial experiments is introduced and the problem of estimating it and testing it for nullity is considered. The asymptotic power efficiencies are studied and Monte Carlo power comparisons are made when samples are drawn
Publikováno v:
Journal of Statistical Computation and Simulation. 3:299-313
We consider the problem of choosing the best of k binomial populations when the time to response is non zero. Several sampling schemes are discussed, with an aim to making as few trials as possible with the poorer treatments, as would be a desideratu
Autor:
Kenny S. Crump, David G. Hoel
Publikováno v:
Journal of Applied Probability. 7:734-746
Suppose F is a one-dimensional distribution function, that is, a function from the real line to the real line that is right-continuous and non-decreasing. For any such function F we shall write F{I} = F(b)– F(a) where I is the half-open interval (a
Autor:
David G. Hoel
Publikováno v:
Biometrika. 55:387-391
SUMMARY This paper is concerned with the application of several closed sequential procedures to the testing of an exponential parameter. In particular, the procedures of Armitage (1957), Schneiderman & Armitage (1962a,b) and Anderson (1960) are consi
Autor:
David G. Hoel, John J. Beauchamp
Publikováno v:
Journal of Statistical Computation and Simulation. 2:197-209
There exist many experimental situations where one has a set of observation vectors from a number of different experimental groups and the investigator is interested in determining what differences may be present among the groups. A univariate statis