Econometrics Commons^™

Nigeria's 2025 Tax Act In Comparative Perspective: Tax Rates, Compliance, And Fiscal Space With Econometric And Machine-Learning Evidence From Nigeria, South Africa, The United Kingdom, And The United States, Olatunji Dauda Ojedokun, Seun Adebanjo

Economic and Business Review

This study compares Nigeria's 2025 Tax Act with regimes in South Africa, the United Kingdom, and the United States using quarterly panel data (2000–2025) and complementary econometric and machine-learning methods. We estimate fixed-effects difference-in-differences, autoregressive distributed lag/cross-sectionally augmented autoregressive distributed lag error-correction models, dynamic panel generalised method of moments, and local projections to identify short- and long-run effects on revenue efficiency, compliance behaviour, and fiscal space. Predictions for VAT/corporate income tax revenues and gaps are generated with Elastic Net, Random Forest, XGBoost, and LightGBM, and heterogeneity is assessed via generalised random forests and doubly robust learners. Results show a significant, …

Airline Ticket Anaysis, Emerson Kohl, Ivan O'Neil

Discovery Day - Daytona Beach

While the U.S. domestic airline industry generates hundreds of billions in annual revenue, the mechanics of airfare pricing remain remarkably opaque to travelers and analysts alike. Prices for geographically similar routes often diverge sharply, driven by a complex interplay of structural constraints and market pressures. This study elucidates the primary drivers of ticket pricing by analyzing high-frequency data from the Bureau of Transportation Statistics DB1B database.   Utilizing an Ordinary Least Squares framework, the research evaluates how route distance, carrier concentration, passenger throughput, and seasonal fluctuations collectively dictate average fares. By quantifying these relationships in Python, the analysis seeks to isolate …

Beyond The Shelf: How Reallocating Shelf Space To Emerging Brands Enhances Store Performance Through Dynamic Brand-Level Effects, Jesse Core, Ho Kim

Journal of Applied Marketing Theory

This study examines the effects of reallocating shelf space from established to emerging brands in the flavored malt beverage category, a fast-moving, impulse-driven product category. Using a 13-week field experiment in 16 U.S. grocery stores (six treated, ten control), we reallocated one shelf facing from an established to an emerging brand for four weeks before reverting the shelves to their original configuration. Then we analyzed weekly SKU-level data on sales with fixed-effects panel regressions. Results show that the shelf-space reallocation increased category sales by 21.2% during treatment and 27.6% after reversion, revealing persistent gains. At the brand level, emerging brands …

The Impatience Of Winning: An Analysis Of Time Discounting, Predictive Modeling, And The Nba Draft, Alec R. Plante

Business and Economics Honors Papers

This paper examines whether NBA draft decisions can be better explained by incorporating non-geometric time discounting into a model of general manager decision making. Using a dataset of 285 NBA draft prospects over a 12-year period, the impact of college statistics on Value Over Replacement Player (VORP) is determined, and these impact values are then used to create a “predicted” VORP for the first 4 seasons of each player’s career: a projection of what a general manager might think of a prospect’s future value given their college statistics. Following this, geometric and hyperbolic time discounting models are applied to estimate …

The Effects Of Private Equity Ownership Of Acute Care Hospitals On Patient Experience, Abigail M. Huffman

Theses and Dissertations

In 10 years, private-equity firms' share of hospitals has grown from 2-3% to 8%.  Using data from two sources: the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) patient surveys and the Private Equity Stakeholder Project (PESP), I demonstrate a causal effect of private-equity ownership on patient satisfaction using difference-in-difference methods.

Quantifying Overconsumption In The United States: A Multiple Linear Regression Analysis, Morgan Davis

Honors Projects

This study examines overconsumption in the United States by analyzing how socioeconomic factors influence household spending relative to income. Overconsumption is defined as elevated discretionary spending relative to income, with a focus on categories such as apparel, entertainment, and food away from home. Using 2024 Consumer Expenditure Survey (CEX) data, three multiple linear regression models were created to evaluate predictors of overall consumption, discretionary consumption, and apparel spending as proportions of income.

Results show that income is the most significant predictor across all models, with higher-income households consistently spending a smaller share of their income. Age and household size also …

Forecasting The Unpredictable: The Bullwhip Effect In The Toy Industry, Mannat Sethi

CMC Senior Theses

This thesis investigates the bullwhip effect, the amplification of demand variability as it moves upstream in a supply chain, with a focus on the toy industry, and comparative analysis with the technology and consumer goods sectors. Using annual data from 1993 to 2024, the study analyzes production and retail growth for Mattel, Hasbro, Intel, and Procter & Gamble to assess how variance between consumer demand and firm output has changed over time. Bullwhip ratios are calculated as the variance of production growth divided by the variance of retail growth across two periods: 1993–2008 and 2009–2024.

The findings show that toy …

Women's Work And Wealth: Measuring The Impact Of Incremental Liberations, 1850-1870, Hannah Kelly

Williams Honors College, Honors Research Projects

Using a two-way fixed effects difference-in-difference model, this project analyzes data from the IPUMS Full Count census for 1850, 1860, and 1870 at a state level for 48 states. Four models assess the impact of property laws on women's real property holdings, labor force participation, household types, and real property values.

By quantifying the impact of various legal reforms on women's economic empowerment, this project fills a gap in the understanding of the intersection between law, society, and women's economic agency during a transformative period in pre-industrial American history. These impacts can implicate the effectiveness of legislative measures in advancing …

Macroeconomic Resilience And Sentiment Dynamics In The Global Luxury Fashion Industry, Mehr Gupta

CMC Senior Theses

The global luxury fashion industry is often viewed as a sector where broad economic conditions intersect with individual spending behavior. Yet despite this common assumption, it remains unclear whether macroeconomic fluctuations meaningfully shape luxury firms’ financial performance. This thesis examines the relationship between four key macroeconomic indicators - consumer sentiment, disposable income, unemployment, and exchange rates - and firm-level quarterly revenue for twelve publicly listed luxury companies from the early 2000s through 2024. Firm financial data from S&P Capital IQ are matched with macroeconomic measures from the Federal Reserve (FRED), and the analysis employs a two-way fixed-effects framework with firm …

From Static Λ To Moving Penalties: Dynamic Regularization In Mean-Variance Portfolio Choice, Ariel Santiago

CMC Senior Theses

This thesis evaluates whether dynamically tuned weight penalties can improve high-dimensional mean-variance portfolio choice. Classical Markowitz portfolios perform poorly when the number of assets is large relative to the data, because small estimation errors in means and covariances can generate extreme, fragile allocations. A common remedy is to regularize the weights using L1 (lasso), L2 (ridge), or elastic-net penalties, but these are typically chosen once and held fixed. Using monthly excess returns on the 48 Fama-French industry portfolios from January 2010 to June 2025, this thesis compares penalized mean-variance and minimum-variance strategies under long-only and long-short constraints, with and without …

Entropic Foundation Of Finance And Physics: Securities Price Dynamics And Quantum Theory, Mohammad Abedi

Electronic Theses & Dissertations (2024 - present)

In many scientific and financial contexts, we must reason and make predictions under conditions of incomplete information. This dissertation develops Entropic Dynamics (ED) as a unified framework for deriving dynamical laws directly from principles of inference. Within this approach, probability distributions represent states of knowledge, and their evolution is determined through entropy maximization subject to relevant constraints. This leads to a novel concept of entropic time and a formulation of dynamics as an inferential process. In this talk, I will present how ED provides a common foundation across multiple domains. In physics, quantum dynamics for particles and scalar fields in …

The Conditional Nature Of The Value Premium: Interaction And Cross-Sectional Evidence Across Market Regimes, Samuel L. Klein

Honors Thesis

This thesis examines why value-based investment strategies generate strong returns in some environments yet weaken or collapse in others. Regressions test whether the performance of the book-to-market ratio depends on the investor’s perception of financial health as defined by F-Score and accruals. Across additive regressions, interaction models, cross-sectionals, and heatmap visualizations, a consistent mechanism emerges. The book-to-market effect is strongest when financial information is neither highly reliable nor severely distressed. In these “moderate-quality” environments, investors struggle to fully distinguish the transitory components of earnings from their persistent counterparts. This makes valuation ratios particularly influential. Accrual intensity and financial strength jointly …

The Bandwagon Model, Dean A. Williams

All Dissertations

Professional sports teams are in the entertainment market where owners of teams invest in players with the hopes of converting their talents into wins, and in turn, added revenues for their team. To gain an understanding of the incentives that shape these team talent investment decisions, prior economists have created theoretical models of professional sports leagues that give predictions regarding the cost to acquire talent, and the winning percentage of teams from different market sizes. These models are then used to show how team talent investment decisions change once professional sports leagues implement policies such as first-year player drafts, salary …

Investigating The Relationship Between Noun Classes And Plant Folk Taxonomy In Chasu Language Of Kilimanjaro Region In Tanzania, Peter Rabson Mziray

Journal of Humanities and Social Sciences

The current study investigates the relationship between noun classes and plant folk taxonomy in Chasu (G 22). The study focuses on two objectives: the first objective is to describe the plant folk taxonomy in Chasu and the second objective is to determine the relationship between noun classes and plant folk taxonomy in Chasu. Data were collected from rural villages in Same and Mwanga districts by using free listing, field interviews (jungle-walk-and-identify), and written texts containing Chasu plant names. The findings reveal that Chasu folk taxonomy reflects different ethnobotanical categories; including a unique beginner which is mmea/mimea ‘plant(s)’, and three life …

Analisis Dampak Kebijakan Insentif Fiskal Terhadap Tingkat Komponen Dalam Negeri (Tkdn) Industri Manufaktur Di Indonesia, Muhammad Muhammad, Riyanto Riyanto

Jurnal Kebijakan Ekonomi

Over the last decade, the manufacturing sector's contribution to Indonesia's economy has declined. In 2010, it was 29.10% of GDP, but by 2022, it had dropped to 19.14%. Employment in the sector also fell, from 14.91% of the workforce in 2010 to 13.80% in 2022. To reverse this trend, the government introduced a policy to boost the Domestic Component Level (DCL) in manufacturing. By offering fiscal incentives to industries meeting certain DCL targets, the government aims to drive economic growth and job creation. A study using BPS data from 2008-2019 shows that this policy raised DCL by 23.5%.

Speculative Bubbles In The Recent Ai Boom: Nasdaq And The Magnificent Seven, Rerotlhe B. Basele, Peter C. B. Phillips, Shuping Shi

Research Collection School Of Economics

The recent artificial intelligence (AI) boom covers a period of rapid innovation and wide adoption of AI intelligence technologies across diverse industries. These developments have fueled an unprecedented frenzy in the Nasdaq, with AI-focused companies experiencing soaring stock prices that raise concerns about speculative bubbles and real-economy consequences. Against this background, this study investigates the formation of speculative bubbles in the Nasdaq stock market with a specific focus on the so-called Magnificent Seven (Mag-7) individual stocks during the AI boom, spanning the period from January 2017 to January 2025. We apply the real-time PSY bubble detection methodology of Phillips et …

Nba Player Types And Salaries: Assessing The Disparities In Pay, Nick Riccardi, Rodney J. Paul

Sport Management - All Scholarship

The purpose of this study was to identify player types that exist in the modern National Basketball Association (NBA), test whether player types are paid differently controlling for performance and other factors and construct successful rosters with cheaper payrolls.
We collected performance statistics and salary data for players and teams across five seasons (2018-19 to 2022-23). Cluster analysis is leveraged to group together player-seasons to identify the player types that exist in the NBA. Linear regression models are run to test for differences in pay by cluster membership while controlling for performance, age, and contractual details. Linear programming simulation models …

Family Ties: Nba Draft Position And Player Performance, Nick Riccardi, Rodney J. Paul

Sport Management - All Scholarship

This study aims to investigate the role, if any, that nepotism plays in the careers of players in the National Basketball Association (NBA). Career performance is compared between the 780 players drafted from 2007-2019 with familial relationships considered. Ordinary Least Squares and logistic regression models are specified to estimate the effect of having a relative on the success of an NBA player’s career. We find that siblings of NBA players earn more and reach minimum games played thresholds more often, while sons of NBA players earn more, but generally do not reach games played thresholds more often than similarly-drafted peers.

Shutdowns And Startups: How Covid-19 Policies Shaped Entrepreneurial Trends Across U.S. States, Mia Sideris

Business and Economics Summer Fellows

The COVID-19 pandemic had an unprecedented impact on the US economy. Severe restrictions were placed on nearly every state, culminating with the declaration of a national emergency in March 2020. The intent of these restrictions was to safeguard public health, while unintentionally imposing operational burdens on businesses. This paper explores how heterogeneity in state level policy responses influenced entrepreneurial activity. Using the synthetic control method and data on mandated workplace closures, we estimate the impact of these actions on business applications per capita in the state of South Carolina, which was late to impose these measures. We find that if …

From Disruption To Integration: Cryptocurrency Prices, Financial Fluctuations, And Macroeconomy, Zhengyang Chen

Faculty Publications

This paper examines cryptocurrency shock transmission to financial markets and the macroeconomy using a Bayesian structural VAR with Pandemic Priors from 2015 to 2024. By affecting overall risk appetite, cryptocurrency price shocks generate positive financial market spillovers, accounting for 18% of equity and 27% of commodity price fluctuations. Real economic effects are significant in driving investment but remain limited, contributing only 4% to unemployment and 6% to industrial production variance. However, cryptocurrency shocks explain 18% of price-level forecast error variance at long horizons. Narrative analysis reveals sentiment and technology as primary shock drivers. These findings demonstrate cryptocurrency's deep financial system …

Borders And Burdens: Three Essays On Inter-Jurisdictional Tax Policy In America, Benjamin Jaros

All Dissertations

Individuals, firms, and governments make decisions about the tradeoffs of different tax policies at jurisdictional borders, such as those between states, nations, or local governments; those choices shape the burden of taxation. This dissertation examines the effects of three distinct changes in tax policy: for state corporate income tax apportionment, colonial tobacco tariffs, and tax abatements for data centers. Chapter 1 examines how changes to the corporate income tax base formula affect state tax revenues. Chapter 2 analyzes how colonial era export and import tariffs on tobacco impacted trade volumes, raised revenue, and the distribution of the tax burden between …

Mortgage Default Classification Modeling For Variable Analysis, Brendan R. Goggins

Honors College Theses

The financial crisis of the early 2000’s is a prime example of the severe consequences that mortgage default and borrower insolvency can have on economies at large. Mortgage default specifically is a prime case with the popularization of mortgage backed securities and the commonality of this loan structure. Multiple hypotheses and models have been formed to understand the reasons, causes, and consequences of mortgage default. This paper uses both machine learning and statistical classification models to inform an understanding of the variables most significant and impactful to the default outcome of mortgages. Consideration is given to both loan-level microeconomic variables …

Assessing The Readiness And Awareness Of Key Stakeholders In The Egyptian Maritime Industry To Implement Smart Green Port Practices: A Case Study Of Alexandria Port, Mohamed Elhussieny, Ahmed El Kassar, Kareem Tonbol

Blue Economy

This study explores the readiness and preparedness of the major stakeholders within the Egyptian maritime sector towards the adoption of smart green port practices, with particular consideration given to Alexandria Port. With growing environmental threats, the need to support sustainable maritime operations is high. The study evaluates the current state of the ecosystem at Alexandria Port and benchmark it against international standards to highlight the critical gaps that should be covered for the effective execution of smart green port approaches. The results indicate that, although stakeholders have basic knowledge of sustainability issues, large perceived barriers, particularly regarding resource availability, limited …

Analyzing Real-Time Behavioral Shifts In Response To Tourism Policy Using Google Trends Data And Advanced Difference-In-Differences (Did) Methods, Aaron Bradley Scott

Doctor of Business Administration Dissertations

Google Trends is a publicly available aggregate search data portal that allows researchers to capture and review search interests. This dissertation analyzes real-time behavioral shifts resulting from tourism policy changes in Venice, Italy using Google Trends data. This work contributes to the current literature in DiD modeling, by using information-seeking behavior that is ahead of observable, lagged, outcomes. Through the integration of recent DiD advancements, this work further extends DiD applications in tourism econometrics, and a case-example of real-world tourism policy assessment. This dissertation highlights changes in search behavior immediately following policy implementation. Additionally, this work highlights Google Trends as …

Redesigning Home Reversion Products To Empower Retirement For Singapore's Public Flat Owners, Koon Shing Kwong, Jing Rong Goh, Jordan Jie Xin Lee, Ting Lin Collin Chua

Research Collection School Of Economics

This paper introduces an innovative sell-type home reversion product aimed at monetizing Singapore’s public flats, serving as a new alternative to the existing Singapore Lease Buyback Scheme (LBS). This new product not only retains the LBS’s guaranteed period of residence in the property along with life annuity incomes but also enhances the product features to meet specific homeowner needs, including the ability to age in place, flexibility in retaining part of the property, options for bequests, and guaranteed principal return. By incorporating these additional features, the new product seeks to stimulate greater demand for monetizing public flats among asset-rich but …

Striking A Balance: Market Shock & Responses In Automotive Components Manufacturing, Emma Lane Mcgahey

All Theses

This thesis examines the effects of extreme market shocks on supply chain dynamics within the automotive industry. Through an analysis of demand data from an automotive manufacturer to its component suppliers (January 2018 to May 2024), the study investigates the relationship between market shocks and supply chain responses, providing insights into how auto components inventory management handles downstream responses to market shocks. With supporting public data—from FRED, BLS, and the U.S. Census Bureau resources—we explore two primary relationships: the impact of market shocks on the Average Standard Deviation of Demand (SDO) and the effect of demand variability on expedited pricing …

Financial Risk In A Changing Climate, Mashuk S. Rahman

LSU New Orleans Theses and Dissertations

Essay 1:

Given the missing-not-at-random (MNAR) nature of carbon emissions figures under the voluntary disclosure regulator environment, this research imputes synthetic emissions figures for both disclosing and non-disclosing publicly traded US firms, using an IV approach adapted for sample bias correction. The forward-observing implied cost of equity capital measure is consistently higher for carbon-intensive firms regardless of disclosure decision. This higher cost found in the large swath of high-emitting firms reduces the net present value of green transition investments, thus fueling existing research on the counterproductive natures of capital allocation in efforts to reduce corporate pollution. Contrary to emerging research, …

Estimating The Effect Of Residential Sales Prices On Building Permits, Emilio Becerra

All Theses

This paper addresses home sales prices’ impact on residential building permit authorization in South Carolina’s Greenville and Richland counties amid the COVID-19 pandemic. The estimation uses a comprehensive data set of the housing markets in both counties for 2016 to 2022, incorporating 88,098 home sales. The analysis exploits the variation in sales prices of homes to analyze the sensitivity in the supply of permits to builders through an instrumental variables approach. Using two instruments, violent crimes and household income, the effect of sales prices on the supply of building permits is positive and statistically significant. Included in the first-stage regression …

Exploring The Motivations And Determinants Of Farmer’S Market Consumers And Organic Specialty Crop Producers, Jane Arnold

All Theses

This two-chapter thesis evaluates the motivations and determinants of the central figures in farmers’ markets and organic markets. The first chapter explores the rise of farmers’ markets popularity through an in-person survey that was designed and distributed to 274 farmers' market consumers. Logit and ordered logit regressions were used to identify the motivations and characteristics that affect the likelihood of being a frequent farmers’ market customer (visiting 5 times or more per season) and spending over $50. The second chapter investigates the organic markets for cucumber and kale, which are dominant specialty crops on today’s grocery shelves. To identify the …

Bubbly Booms And Welfare, Feng Dong, Yang Jiao, Haoning Sun

Research Collection School Of Economics

We show the competing effects of a housing bubble on the real economy by developing a multi-sector dynamic model with housing production. On the one hand, firms can sell or collateralize their housing, so a housing bubble helps firms obtain credit to finance their investment and expand production. On the other hand, a boom in the housing sector crowds out labor in the non-housing sector. We show that housing booms can reduce social welfare both in the steady state and in the transitional dynamics only when the production externalities in the non-housing sector are sufficiently large. We quantitatively evaluate our …