Traditional tests for parallel trends in the context of differences-in-differences are based on the observation of the mean values of the dependent variable in the treatment and control groups over time. However, given the new discussions brought by the development of the event study designs, it...

This study explores the volatility models and evaluates the quality of one-step ahead forecasts of volatility constructed by (1) GARCH, (2) TGARCH, (3) Risk metrics and (4) Historical volatility. Volatility forecasts suggest that TGARCH performs relatively best in term of MSPE, followed by...

Nowadays, the understanding of the impact of social media and online news media on the emergence of extreme polarization in political discourse is one of the most pressing challenges for both science and society. In this study, we investigate the phenomenon of political polarization in the...

The purposes of this study were to present the current situation of poverty, economic growth, and economic development for five selected countries in Latin America and to examine the relationship between poverty, economic growth, and economic development through traditional log-linear regression...

The purposes of this study were to present the current situation of poverty, economic growth, and economic development for five selected countries in Latin America and to examine the relationship between poverty, economic growth, and economic development through traditional log-linear regression...

This note documents the method for calculating Gini Coefficients in R using 2000 Census data. Many people have use this method for computing Ginis for ZCTA’s for example. You can find these estimates for both the 50 states, as well as all US counties and additional information about Gini...

Eight out of ten leading international indices to assess developing countries in aspects beyond GDP are showing strong redundancy, bias and unilateralism. The quantitative comparison gives evidence for the fact that always the same countries lead the ranks with a low standard deviation. The...

An incomplete manuscript on Statistics for economists.

The purpose of this paper is twofold: 1) to highlight the widely ignored but fundamental problem of ‘superpopulations’ for the use of inferential statistics in development studies. We do not to dwell on this problem however as it has been sufficiently discussed in older papers by...

The present work corroborates the existence of two anomalies that question the hypothesis of efficient markets in the Chilean stock market, these are the “effect weekend” or “effect monday” and the “effect month end”. Using the daily values of closing of stock-exchange index IPSA,...