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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

A study of four methods of computing analysis of variance on a two-way design fixed-model with disproportionate cell frequencies

Black, Kenneth U. 08 1900 (has links)
This study sought to determine the effect of varying degrees of disproportionality of four methods of handling disproportionality cell frequencies in two-way analysis of variance. A Monte Carlo simulation procedure was employed. Two multiple linear regression techniques and two "approximate" techniques were compared.
72

Estimation of (co)variance components by weighted and unweighted symmetric differences squared, and selected MIVQUE's : relationships between methods and relative efficiencies /

Keele, John Wiliam January 1986 (has links)
No description available.
73

Norm-referenced construct validation of the Adaptive Behavior Scale for Infants and Early Childhood (ABSI) using covariance structure modeling (LISREL) /

Weaver, David January 1986 (has links)
No description available.
74

Bayesian optimal experimental design for the comparison of treatment with a control in the analysis of variance setting /

Toman, Blaza January 1987 (has links)
No description available.
75

Estimability and testability in linear models

Alalouf, Serge January 1975 (has links)
No description available.
76

An examination of outliers and interaction in a nonreplicated two-way table

Kuzmak, Barbara R. 11 May 2006 (has links)
The additive-plus-multiplicative model, Y<sub>ij</sub> = μ + α<sub>i</sub> + β<sub>j</sub> + ∑<sub>p=1</sub><sup>k</sup>λ<sub>p</sub>τ<sub>pi</sub>γ<sub>pj</sub>, has been used to describe multiplicative interaction in an unreplicated experiment. Outlier effects often appear as interaction in a two-way analysis of variance with one observation per cell. I use this model in the same setting to study outliers. In data sets with significant interaction, one may be interested in determining whether the cause of the interaction is due to a true interaction, outliers or both. I develop a new technique which can show how outliers can be distinguished from interaction when there are simple outliers in a two-way table. Several examples illustrating the use of this model to describe outliers and interaction are presented. I briefly address the topics of leverage and influence. Leverage measures the impact a change in an observation has on fitted values, whereas influence evaluates the effect deleting an observation has on model estimates. I extend the leverage tables for an additive-plus-multiplicative model of rank 1 to a rank k model. Several examples studying the influence in a two-way nonreplicated table are given. / Ph. D.
77

Certain percentage points of the distribution of the studenized range large samples

Beyer, William H. 07 November 2012 (has links)
The purpose of this work is to investigate methods of obtaining special percentage points of the studentized range, In fulfilling this purpose, two new methods are developed and used. / Master of Science
78

Analysis of variance of a group divisible singular design with two associate classes with missing observations

Anwar, S. M. January 1962 (has links)
The problem discussed in this paper is the estimation of a single missing observation, two missing observations and several missing observations in a Group Visible (Singular) for Shirley balanced incomplete blocks design with two associate classes. Subsequently the analysis of variance, of the data augmented by the estimates of the missing observations, is derived. The method, first employed by Yates (1933), was followed to minimize the error sum of squares. Explicit formulae were developed, for the estimates of one missing observation, two missing observations occurring in various configurations and general formulae for z (= n) missing observations for certain particular configurations. Analysis of the data augmented by the estimates of the missing observations lead to positive bias in the case of treatment sum of squares, a method of analysis was discussed to eliminate this bias. A numerical example of illustrating the technique of estimating missing observations in a GDS P.B.I.B. design was given. The approximate and exact tests were performed, for the null hypothesis of no treatment differences, using the intra-block error mean square. / Master of Science
79

Confidence intervals for the differences between treatment means in an analysis of variance

Bonner, Robert G. January 1954 (has links)
A method has been proposed for obtaining confidence intervals for the differences between treatment means in an analysis of variance. The intervals have the following properties: (1) The probability that the interval will cover the parameter is greater than or equal to (1 - α), and (2) If the same procedure is applied simultaneously to each of the pO2 differences among p means, the probability that all confidence intervals will cover the parameters correctly is at least (1 - α) <sup>p - 1</sup>. The same properties hold if the procedure is simultaneously applied to special linear comparisons among the means as well as to differences between single means. The intervals are complex in that the limits are dependent on the values of nuisance parameters. Three alternatives for handling these nuisance parameters are discussed, and one is preferred for use in practice. / Master of Science
80

A computer simulation study for comparing three methods of estimating variance components

Walsh, Thomas Richard January 2010 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries

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