A standard test for weak instruments compares the first-stage F-statistic to a table of critical values obtained by Stock and Yogo (2005) using simulations. We derive a closed-form solution for the expectation from which these critical values are derived, as well as present some second-order...

In this paper, several identities concerning expectation, variance, covariance, cumulative distribution functions, the coefficient of variation, and the Lorenz curve are obtained and they are used in establishing theoretical results. Furthermore, a graphical representation of the variance is...

This paper features an analysis of cryptocurrencies and the impact of the COVID-19 pandemic on their effectiveness as a portfolio diversification tool and explores the correlations between the continuously compounded returns on Bitcoin, Ethereum and the S&P500 Index using a variety of parametric...

Einf(c)ơhrung -- Mehrdimensionale Zufallsvariablen und Verteilungen -- Grundlegende multivariate Sch(c)Þtz- und Testprobleme -- Regressionsanalyse -- Varianz- und Kovarianzanalyse -- Kategoriale und generalisierte lineare Regression -- Regressionsmodelle zur Analyse von Verweildauern --...