In the current study, we analyze the effect of having a Roma background on women's wages. By utilizing the Athens Area Study random sample (2007-08) drawn from 16 multiethnic municipalities in which Roma live, we estimate that 66.1% of the wage differential between Roma and non-Roma female...

Structural vector autoregressions (SVARs) are widely used for policy analysis and to provide stylized facts for dynamic general equilibrium models. Yet there have been no workable rank conditions to ascertain whether an SVAR is globally identified. When identifying restrictions such as long-run...

Travel arrangements and flight ticket booking via internet is widely used nowadays and follow already certain standards. Although increasing activity for multimedia/web education components can be observed, we are far away from standards in this important area. Statistics can possibly profit the...

Many mathematical and statistical questions require the use of computational assistance. The proposed XploRe Quantlet Client (XQC) with it's combined CUI and GUI interface gives access to the XploRe software environment (XploRe Quantlet Server - XQS) with it's large number of available...

The use of electronic spreadsheets as the primary software tool for teaching management science modeling techniques and quantitative methods in economics and finance undoubtedly played a key role in the increasing impact of quantitative lectures given in graduate programs. Researchers suggest...

Aus der statistischen Praxis ist der Computer heute nicht mehr wegzudenken. In der statistischen Lehre dagegen wird der PC häufig noch nicht adäquat genutzt. Dieser Artikel beschreibt Entwicklung, Einsatz und Evaluation eines PC gestützten Lehrkonzepts, das in der statistischen...

In this article we examine how model selection in neural networks can be guided by statistical procedures such as hypotheses tests, information criteria and cross validation. The application of these methods in neural network models is discussed, paying attention especially to the identification...

In der vorliegenden Untersuchung wird der Einfluss von Practice Tests auf das Klausurergebnis im Fach Statistik untersucht. Dazu wurden die Daten von 442 Studierenden der Universität Duisburg-Essen, Campus Essen, ver- wendet. Diesen wurden während des Semesters Übungsblätter zur Bearbeitung...

In this paper, we make use of state space models to investigate the presence of stochastic trends in economic time series. A model is specified where such a trend can enter either in the autoregressive representation or in a separate state equation. Tests based on the former are analogous to...