The Witika OLS Regression Method In STATA: A Comprehensive Annotated Methodology for Cross-Sectional and Time Series Analysis 1Fitzgerald Witika 1Department of Research & Development, Research Expert Solutions, Lusaka, Zambia Abstract: This article presents the full econometric methodology underpinning the Witika Ordinary Least Squares regression suite for STATA, comprising two purpose-built estimation commands: witikacrossregression for cross-sectional […]

Marginal Returns of Direct Taxes on Economic Growth in Zambia: A Bivariate Policy Impact Analysis with Ceteris Paribus Using WitikaStats 1Fitzgerald Witika 1Department of Research & Development, Research Expert Solutions, Lusaka, Zambia Abstract: This study employs a marginal returns framework using WitikaStats to analyze the non-linear relationship between direct taxes and economic growth in Zambia […]

Spatial Association of Worldwide Governance indicators with GDP in selected African countries: A spatial economic analysis using Geo-Economica 1Fitzgerald Witika 1Department of Research & Development, Research Expert Solutions, Lusaka, Zambia Abstract: This study investigated the spatial association between six dimensions of governance—Control of Corruption, Government Effectiveness, Political Stability and Absence of Violence/Terrorism, Regulatory Quality, Rule […]