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Showing 1 to 20 of 40 for “"Contingency table"”.
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Objective Bayesian analysis of the 2 x 2 contingency table and the negative binomial distribution
… for the odds ratio of an unrestricted 2 x 2 table. Posterior simulation can be conducted without MCMC and is implemented on a GPU via the CUDA extensions for C. Simulation results indicate that the proposed approach to this problem is far superior to the widely used Frequentist approaches …
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Explicit Estimates for Cell Counts and Modeling The Missing Data Indicators in Three-Way Contingency Table by Log-Linear Models
… Derivation of explicit cell counts for three-way table with supplementary margins can be obtained by controlling the missingness in third variable and by modeling the missing-data indicators using homogeneous log-linear models. Model based approach for contingency tables has the advantage of …
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Order Restricted Estimation and Tests for Fit in Homogeneous Row-Column Models
… scores for rows and columns of a two-way contingency table. If the parametric scores assigned to rows and columns of the table reflect the ordinality of the row and column categories then we have an order-restricted RC model. Maximum likelihood estimates of these score parameters subject …
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Canonical Correlation and Correspondence Analysis of Longitudinal Data
… the data are summarized in the form of a contingency table. It is generally not straightforward to model dependency of contingency tables over time. However, we have proposed fitting correlated linear models to the summary statistics obtained by performing the usual correspondence analysis …
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Phytogeography, endemism and diversity of the fynbos of the southern Langeberg
… of endemism were investigated using (a) two-way contingency table analysis and (b) generalised linear modelling. From the contingency table approach it was found that endemism is not randomly distributed taxonomically, in terms of biological attributes of species and with respect to the montane …
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Modeling and Measuring Association for Ordinal Data
… statistic and consider it in the cumulative contingency tables. For the non-cumulative tables, we provide the scoring systems and the variance minimization correction term to Pearson goodness-of-fit statistic. We also put forward the average of individual odds ratios as the common odds ratio …
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Estimation of population totals from imperfect census, survey and administrative records
… be represented by the cells of a 2<sup>r</sup> contingency table, where r is the number of captures. This contingency table will have one cell missing, corresponding to the population missed in all r captures. If this cell count can be estimated, adding this to the sum of the observed cells will …
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Using the EM Algorithm to Estimate the Difference in Dependent Proportions in a 2 x 2 Table with Missing Data.
… between dependent proportions from a 2 × 2 contingency table when there are missing data. The Expectation-Maximization (EM) algorithm is used to obtain an estimate for the difference between correlated proportions. To obtain the standard error of this difference I employ a resampling …
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A study of dropout characteristics and school-level effects on dropout prevention
… schools into one of nine cells in a 3 x 3 contingency table that crossed three levels of Percent of Actual Dropouts with three levels of Percent of Potential Dropouts. In Phase III, a MANOVA was conducted using a 1 x 4 design. The levels of the independent variable were four school …
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Virginia Technology Education Teachers' Implementation of Standards for Technological Literacy
… Rogers' attributes of and innovation. A two way contingency table was used to evaluate the relationship between Rogers' attributes of innovation and the implementation of individual Standards. Twenty percent of the respondents use STL with varying percentages for each individual Standard. These …
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Concurrent Validity Study of the Clinical Assessment of Depression with the Beck Depression Inventory-Second Edition
… the BDI-II classification as the criterion, a contingency table was computed and a classification consistency of 82% for the total sample was found. Findings of the current study indicate that the CAD appears to have adequate validity to support its use with adolescents.</p> </p>
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Rao's Quadratic Entropy and Some New Applications
… with the suggested modification to analyze the contingency table data is explored. Then its application to ecological biodiversity is established by constructing practically equivalent confidence intervals. The methods are applied on a real dinosaur diversity data set and simulation experiments …
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Osage Glass Bead Use: Archaeological and Ethnohistorical Evidence of Change and Continuity Through the Early Postcontact Era
… Osage cultural development as a process of inevitable change due to Osage adoption of European culture. The lack of discussion about cultural continuity and indigenous agency is problematic because it minimizes the Osages' role in their own cultural development. This problem is addressed through …
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CONSTRAINED STATISTICAL INFERENCE WHEN TARGET AND SAMPLE POPULATIONS DIFFER
When analyzing an I × J contingency table, there are situations where sampling is taken from a sampled population that differs from the target population. Clearly the resulting estimators are typically biased. In this dissertation, four adjusting methods for estimating the cell probabilities under …
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Topics on the estimation of small probabilities
… of the cell probabilities for multinomial and contingency table problems is derived and discussed. This method is a generalization of the Maximum Likelihood estimator to situations when small probabilities are to be estimated and the standard Maximum Likelihood estimator is inadequate. In …
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Teacher Attrition And Retention In Exceptional Student Education: An Evaluation Of The Skills, Tips, And Routines For Teacher Success (STARTS) Initiative of Volusia County, Florida Schools
… education position, or exited the school system. Contingency table analysis with crosstabulation was used to evaluate statistical relationships among variables. Effect size was assessed with Cramer's V and the contingency coefficient. All analyses were conducted with an alpha of .05. A significant …
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Genome scale metabolic modelling to identify metabolic responses of resistant bacteria to antibiotic challenges
… was developed as a part of this study. Contingency table analysis showed a high degree of agreement between model and experimental knockouts. It was inferred that reaction knockouts in GSM were in concordance with experimental gene knockouts.
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The Accidental Experts: A Demonstration of the Existence, Utility, and Emergence of Implicitly Learned Tacit Knowledge in Assistive-Augmentative Technology Users.
… for questions 1-10, and a 2 x R (R = 3 or 4) contingency table and Fisher's Exact Chi-Square were used for questions 11- 25. The responses to survey questions showed no statistically significant differences or interaction for the variables gender, expertise, and service (p < 0.0017). …
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Using total precipitable water anomaly as a forecast aid for heavy precipitation events
… regions. The hypothesis that total precipitable water anomaly (TPWA) will be positive and increasing preceding heavy precipitation events is tested in order to establish an understanding of TPWA evolution. Results are then used to create a precipitation forecast aid. The operational, 16 …
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Linear and log-linear models based on generalized inverse sampling scheme
… between the various factors in multidimensional tables and are easily generalized to higher dimensions. In this thesis, a log-linear model has been defined for a multi-way contingency table, where the cells are frequency counts that follow an extended negative multinomial distribution. The …
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