Search results
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Title
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Cross-Sectional and Time Series Analysis of Crime Rate Across North Carolina
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Author
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Johnson, Isabella
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Date Created
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2022
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Subjects--Topical
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Statistics, Mathematics
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Description
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Unemployment rate reached an astronomical high in 2020 due to the Covid-19 pandemic.The media began reporting on increasing crime rates due to the unemployment rate rising. The Center for Disease Control (CDC) reported that over 81,000 drug overdo...
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Title
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Dynamic Modeling of Incomplete Event History Data
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Author
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Heng, Fei
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Date Created
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2019
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Subjects--Topical
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Statistics
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Description
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Event history analysis has important applications in many fields, such as medicine, engineering, econometrics, actuarial science, and social studies. We usually encounter missing data problems in the modeling of event history data. One typical pro...
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Title
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Generalized semiparametric varying-coefficient models for longitudinal data
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Author
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Qi, Li
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Date Created
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2015
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Subjects--Topical
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Mathematics, Statistics, Biometry
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Description
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In this dissertation, we investigate the generalized semiparametric varying-coefficient models for longitudinal data that can flexibly model three types of covariate effects: time-constant effects, time-varying effects, and covariate-varying effec...
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Title
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Goodness-of-Fit Tests Under Permutations
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Author
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Chen, Chen
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Date Created
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2019
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Subjects--Topical
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Statistics, Mathematics, Information science
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Description
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Several new goodness-of-fit tests are proposed on countable alphabets, where certain fundamental statistical concepts associated with random variables, such as cumulative distribution functions, characteristic functions and moments, may not exist....
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Title
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Inequalities in Education: A Closer Focus on School Discipline
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Author
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Furukawa, Taylor
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Date Created
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2023
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Subjects--Topical
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Education, Statistics, Social sciences--Research
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Description
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Disproportionalities in school discipline have become a popular research topic in recent decades, particularly at the school-, district-, and state-level. While there are a handful of reports using nationally representative data, this study provid...
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Title
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Interval Estimation for Semiparametric Predictive Regression
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Author
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Hong, Shaoxin
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Date Created
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2018
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Subjects--Topical
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Statistics
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Description
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Predictive regression is an important research topic in financial econometrics. Various estimation methods have been proposed for it, but they suffer from complicated asymptotic limits which depend on whether or not the predicting variable is stat...
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Title
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Jensen-Shannon Divergence: Estimation and Hypothesis Testing
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Author
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Stewart, Ann
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Date Created
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2019
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Subjects--Topical
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Statistics
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Description
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Jensen-Shannon divergence is one reasonable solution to the problem of measuring the level of difference or "distance'" between two probability distributions on a multinomial population. If one of the distributions is assumed to be known a priori,...
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Title
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March Madness prediction using quantile regression
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Author
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Mays, Kimberly
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Date Created
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2022
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Subjects--Topical
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Statistics, Mathematics
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Description
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The annual NCAA Division I men’s basketball tournament is one of the most prominent sporting events in the United States and the subject of much interest among fans and statisticians alike. In this work, we propose a new method for predicting ther...
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Title
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Multivariate Functional Predictor Selection
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Author
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Mahzarnia, Ali
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Date Created
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2021
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Subjects--Topical
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Mathematics, Statistics
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Description
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We propose methods for functional predictor selection and the estimation of smooth functional coefficients simultaneously in a scalar-on-function regression problem under a high-dimensional multivariate functional data setting. In particular, we d...
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Title
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Non-nested Model Selection via Empirical Likelihood
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Author
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Zhao, Cong
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Date Created
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2017
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Subjects--Topical
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Statistics
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Description
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In this dissertation we propose an empirical likelihood ratio (ELR) test to conductnon-nested model selection. It allows for heteroscedasticity and works for any twosupervised statistical learning methods under mild conditions. We establish asympt...
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Title
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Semiparametric Additive Hazards Models with Missing Covariates
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Author
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Subedi, Pramesh
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Date Created
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2021
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Subjects--Topical
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Statistics, Biometry
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Description
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The case-cohort study design was originally proposed by Prentice (1986). Under this design,a random sub-cohort of individuals is selected from the cohort of study. Full covariate data are collected from all the cases in the cohort and the sub-coho...