This paper shows that skewness of individual firms return distributions has a considerable spurious effect on the mean-variance relationship as it is usually measured.

The existing theory of modularity explains how modular designs create value. We extend thistheory to address value appropriation. A product or process design that is modular with respect tointellectual property (IP) allows firms to better capture value in situations where knowledge andvalue...

Die «Schweizerische Sozialversicherungsstatistik» gibt einen umfassenden Überblick über die Entwicklung der einzelnen Sozialversicherungszweige und der Gesamtrechnung der Sozialversicherungen. Sie weist aktuelle Angaben sowie Zeitreihen über Einnahmen, Ausgaben und Kapital, die Zahl der...

Teaching statistics to students in our area of economics and educationalscience often brings about the problem that students have either forgottentheir statistical knowledge, or have taken different classes than the ones weoffer in basic statistics. We therefore need some kind of statistical...

Students of introductory courses consider statistics as particularly difficult,as the understanding of the underlying concepts may require more time andenergy than for other disciplines. For decades statisticians have tried to enhanceunderstanding with the help of technical solutions such as...

Along with many others, we agree that a modern education in statistics needs toincorporate the practical analysis of real datasets, which are usually more complex than the common examples found in standard textbooks. The software used in the teaching of statistics includes standard spreadsheet...

E-learning plays an important role in education as it supports online education viacomputer networks and provides educational services by utilising information technologies. We present a case study describing the development of an Arabic language elearning course in statistics. Discussed are...

This book is the third volume of the Handbook of Computational Statisticsand covers the field of Data Visualization. In line with the companion volumes,it contains a collection of chapters by experts in the field to present readerswith an up-to-date and comprehensive overview of the state of the...

In this paper, we present a case study, which describe the development of the Statistic e-learning-course in Arabic language –”Arabic MM*STAT”. The basic frame for this E-book, the system MM*STAT was developed at the School for Business and Economics of Humboldt-Universit¨at zu Berlin....

Econometrics often deals with data under, from the statistical point of view, non-standard conditions such as heteroscedasticity or measurement errors and the estimation methods need thus be either adopted to such conditions or be at least insensitive to them. The methods insensitive to...