Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Nonparametric test"”.
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Nonparametric and semiparametric methods for interval-censored failure time data
… on two types of interval-censored data by using nonparametric and semi-parametric approaches. Three new procedures, which include a goodness-of-fit test for the proportional odds mode with interval-censored data, a nonparametric test for comparing two survival functions with interval-censored …
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Multivariate analysis of the effect of source and supply and carrier on processing and shipping times for issue priority group one requisitions
… models, Generalized Linear Models (GLMs) and nonparametric methods to explore the structure of the historical requisition datasets. OLS linear models were found to be inadequate, but both the GLMs and nonparametric tests proved to be valid and yielded results from which inferences could be …
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Kernel Estimators in Complex Data Analysis
… called “curse of dimensionality” phenomenon with nonparametric statistical methods, statisticians continue to propose sophisticated methods based on kernel estimators to handle complex data analysis problems. In this thesis, we talk about two such newly developed methodologies related to …
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Psychological Birth Order and Career Adaptability in an At-Risk College Population
… parameters using multiple one-sample t-tests. The researcher used the Kruskal-Wallis nonparametric test to analyze the data collected from the PBOI and the CAAS. Psychological birth order was the grouping variable, and the four dimensions of career adaptability were the dependent …
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The cost of equity capital for REITs : an examination of three asset-pricing models
… of equity REITs. This conclusion is based upon a nonparametric test comparing the fitted coefficients of determination (R 2 's) from each of the regressions. Furthermore, the range of cost of equity estimates produced by the FFM seems rational given the specific characteristics of equity REITs.
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An Evaluation of the Teacher Education Program at William Penn College
… according to the seven stated hypotheses. MANOVA tests and a nonparametric test were used to test the hypotheses. Findings. The graduates' perceptions of their program objectives were significant for each of the seven hypotheses. Significance (P<.05) was found between the mean values by groups. …
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A Measurement of Readiness for Tennessee Hospitals to Implement “Meaningful Use” Criteria Resulting from the American Recovery and Reinvestment Act, 2009
… case was removed from the comparison in the t-test (N=94). The t-test comparison of rural and urban hospital found a significant difference at (p=.002), two tailed.</p><p>To ensure that the slightly nonnormal distribution of the readiness scores did not explain the difference found with the …
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Learning styles and academic achievement among building construction students
… and inferential statistic involving parametric test; Chi Square and Multivariate Analysis of Variance (MANOVA). Kruskal-Wallis was used for nonparametric test for this study. The content analysis for interview was managed to analyze the narrative text from interview record. The study discovered …
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UK mutual fund performance
… market timing performance of the funds. Using a nonparametric test procedure the study evaluates both unconditional market timing and timing conditional on publicly available information. A relatively small number of funds (around 1%) are found to successfully time the market while market …
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The Efficacy Of Select Nonparametric And Distribution-Free Research Methods: Examining The Case Of Concomitant Heteroscedasticity And Effect Of Treatment
… Compared to parametric procedures, nonparametric and distribution-free research methods make minimal assumptions about underlying population data. They are robust to departures from parametric assumptions, and hold distinct power advantages under the most realistic conditions found …
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A causal comparative investigation into transactional versus transformational instructional delivery style in two freshman-level humanities courses at a Southeastern American university
… in the classroom. Using independent-samples t-tests and the Mann-Whitney U nonparametric test statistic, it was determined that instructional delivery style did have an effect on both final course grade and perceived teacher effectiveness, and furthermore, that a more transactional style was …
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Faculty Attitudes Toward Residential and Distance Learning: A Case Study in Instructional Mode Preferences Among Theological Seminary Faculty
… the instrument used in the study. The TSC is a nonparametric test designed to uncover differences between the observed and expected levels of acceptance that a department, program, or institution possesses regarding change toward distance learning in contrast to residential learning. The …
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Approximation of Quantiles of Rank Test Statistics Using Almost Sure Limit Theorems
… method introduced by Thangavelu (2005) for rank tests and Fridline (2010) for the correlation coefficient. LQE is derived from an almost sure version of the central limit theorem using the results of Berkes and Csaki (2001), and it estimates the quantiles of a test statistic using only the data. …
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Statistical Modeling for High-dimensional Compositional data with Applications to the Human Microbiome
… in a composition must sum to one, traditional tests based on unconstrained data become inappropriate, and new statistical methods are needed to analyze this special type of data. This dissertation is motivated by some statistical problems arising in the analysis of compositional data. In …
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Common variants in antibody deficiencies
… due to a lack of power. I improve an existing nonparametric test of genetic similarity, the genome-wide pairwise-association signal sharing (GPS) test, through identification of a more suitable null distribution to achieve uniformity of p-values under the null. I devise a permutation testing …
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Price jumps and volatility in U.S. agricultural futures markets
… intraday prices from 2008 to 2015, we employ a nonparametric test to detect jumps and variance analysis to estimate jump or execution risk. Real-time trading of major USDA reports has substantially increased the frequency and clustering of price jumps, and results in higher market liquidity …
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Rank-based Two Sample Tests Under a General Alternative
The problem of testing whether two samples come from the same or different population is a classical one in statistics. In this dissertation, I first study rank based formulation of univariate two-sample distribution-free tests. One form of the test statistic is the average of between-group …
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Airflow limitation in croup
… of the compliant, narrowed airway. In order to test that theory, it was necessary to obtain the flow, the driving pressure in the subglottis and the cross-sectional area of the subglottis of patients with croup. Unfortunately, the measurement of subglottal cross-sectional areas from videos made …