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Showing 1 to 20 of 360 for “"Goodness of Fit"”.
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The goodness-of-fit tests for geometric models
We propose two types of goodness-of-fit tests for geometric distribution and for a bivariate geometric distribution called BGD(B&D), based on their probability generating function (PGF). The first type is a special-case application of the general testing procedure for discrete distributions …
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GOODNESS OF FIT TESTS FOR GENERALIZED LINEAR MIXED MODELS
… (GLMMs) are widely used for regression analysis of data, continuous or discrete, that are assumed to be clustered or correlated. Assessing model fit is important for valid inference. We therefore propose a class of chi-squared goodness-of-fit tests for GLMMs. Our test statistic is a quadratic …
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A graphical approach for goodness-of-fit of Poisson model
Extensive work has been done on goodness-of-fit (GOF) tests for data assumed to have come from univariate continuous distributions; however, literature on GOF procedures for univariate discrete distributions is rather sparse in compariSon The Poisson distribution in particular has received much …
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Temperament and Goodness-of-Fit and Their Effects on Parenting Stress
… subjects), were examined along with levels of parenting stress. Nine "referred" children and nine "nonreferred" comparison children, matched on age and gender, were included in the study. The parents completed the TABC parent form, DOTS-R, and PSI. Whether or not the children had been …
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Goodness-of-Fit for Length-Biased Survival Data with Right-Censoring
Cross-sectional surveys are often used in epidemiological studies to identify subjects with a disease. When estimating the survival function from onset of disease, this sampling mechanism introduces bias, which must be accounted for. If the onset times of the disease are assumed to be coming from a …
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On estimation and goodness-of-fit testing for the Pareto distribution
The Pareto distributions are a class of distributions containing several members with varying levels of flexibility. Two of these members, the Pareto Type I and the Lomax distributions, are of particular interest in this thesis. The Pareto Type I distribution is a popular choice of model in many …
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Asymptotically robust permutation tests for two-sample goodness-of-fit testing problems
… published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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A Jackknife Empirical Likelihood Approach To Goodness Of Fit U-Statistic Testing With Side Information
<p>Motivated by applications to goodness of fit U-statistics testing, the jackknife empirical likelihood of Jing, <em>et al.</em> (2009) is justified with an alternative approach, and the Wilks theorem for vector U-statistics is proved. This generalizes Owen's empirical likelihood theorem for a …
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The Influence of Model Features on Goodness-of-Fit Indices: Choosing Indices to Evaluate Your Model
… were conducted to examine the performance of eight goodness-of-fit indices (i.e., the chi-square statistic, Comparative fit index, Critical N; Goodness-of-fit index, Normed fit index, Nonnormed fit index, Root mean square error of approximation, and Relative noncentrality index) used in …
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An Investigation of the Goodness of Fit of the Maximum Likelihood Estimation Procedure in Factor Analysis
… in DSpace on 2014-12-10T21:07:14Z (GMT). No. of bitstreams: 1 7207006.pdf: 9703683 bytes, checksum: 76d727416d3789faff802857c77e8979 (MD5) Previous issue date: 1971
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The Goodness of Fit: A Qualitative Multicase Study of Community-Based Graduate Social Work Education-at-a-Distance
… poorly received. A concern for access is part of the university's ""outreach mission"" to provide educational programs and opportunities to citizens throughout the state: Community based courses and distance education are responses to that obligation. In offering these courses to the social …
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Methods for checking the goodness of fit of alternative nonlinear mixed models with an application in fertility traits of beef cows
… The first may be viewed as an extension of the analysis of deviance using posterior density functions associated with alternative models, rather than likelihood functions. The major problem with the statistic generated here (referred hereafter as STAT) resides in calculating the …
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Kolmogorov-Smirnov test for grouped data
… grouped samples. It constitutes an application of W. J. Conover's procedure, which was originally designed for calculating exact critical levels for test with discrete distributions. This test extends the goodness-of-fit test to samples which are grouped into intervals. Critical levels in the …
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Modeling repairable system failure data using NHPP reliability growth mode.
… have been widely used to describe the behaviour of repairable systems. The Crow nonhomogeneous Poisson process (NHPP) often known as the Power Law model is regarded as one of the best models for repairable systems. The goodness-of-fit test rejects the intensity function of the power law model, …
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Hydrodynamic and Water Quality Simulation of Fecal Coliforms in the Lower Appomattox River, Virginia
The Virginia Department of Environmental Quality (VADEQ) under the direction of the United States Environmental Protection Agency (USEPA) has listed the lower Appomattox River as impaired because it violates current water quality standards for fecal coliforms. To advance the analytical process by …
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Approximating the distributions of x2-type mixtures via matching four cumulants
Nonparametric goodness-of-fit tests often result in test statistic which can be written as a random variable of chi-square-type mixtures. Zhang (2003) proposed to approximate its distribution using a random variable of form chi-square-type mixtures via matching the first three cumulants. In this …
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The college dropout: The relative contribution of individual, structural, and institutional factors to the withdrawal of male and female, black and white students from 4-year colleges
This study sought to test the synthesis model of dropout which combines three approaches--the individual-oriented approach, the structure-oriented approach, and Tinto's interaction approach. Research questions were addressed as follows: (a) how well does the synthesis model fit the data in terms of …
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A robust variable order facet model for image data
The underlying piecewise continuous surface of a digital image can be estimated through robust statistical procedures. This thesis contains a systematic Monte Carlo study of M-estimation and LMS estimation for image surface approximation, an examination of the merits of postprocessing and tuning …
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A Study of Locus of Control and Brain Dominance of 5Th and 6Th Grade Children
… determine if there was a significant occurrence of locus of control among fifth and sixth grade students. It was also intended to determine if there is a significant occurrence of brain dominance and locus of control. The study involved fifth and sixth grade students. The Zenhausern Hemispheric …
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