The Mean-Variance (MV) is the most popular methodology for constructing portfolios. However, it is not consistent with the expected utility hypothesis, unless one assumes the strong assumptions of either a quadratic utility or normally distributed asset returns. The Mean-Gini (MG) is an...

We consider statistical tests concerning various relationships between two absolute concentration curves (ACC). In particular, we consider tests for determining if the two ACC's coincide, one is above another in a specified order, or do not intersect without specifying which one is above/below...

A nonparametric multiple regression method, based on the extended Gini that depends on one parameter, v, is investigated. The parameter v enables production of infinite alternative linear approximations to the regression curve which differ in the weighting schemes applied to the slopes of the...

A particular shortcoming of panel surveys is potential bias arising from selective attrition. Based on data from the German Socio-Economic Panel Study (SOEP) we analyze potential artifacts (level, structure, inequality of income) by comparing results from two independently drawn panel...