We deal with two-way contingency tables having ordered column categories. We use a row effects model wherein each interaction term is assumed to have a multiplicative form involving a row effect parameter and a fixed column score. We propose a methodology to cluster row effects in order to...

Der Ifo World Economic Survey (WES) befragt vierteljährlich weltweit ca. 1 100 Experten aus nationalen und internationalen Organisationen in über 90 Ländern bezüglich ihrer Einschätzung wichtiger makroökonomischer Variablen in ihrem jeweiligen Land. Seit Juli 1991 wird auch nach der...

Models evaluating credit applicants rely on payment performance data, which is only available for accepted applicants. This sampling limitation could lead to biased parameter estimates. We use a nationally representative sample of credit bureau records to examine sample selection bias in account...

To compare distributions of ordinal data such as individuals' responses on Likert-type scale variables summarizing subjective well-being, we should not apply the toolbox of methods developed for cardinal variables such as income. Instead we should use an analogous toolbox which takes account of...