When calculating the Gini coefficient for distributions which include negative values, the Gini coefficient can be greater than one, which does not make evident its interpretation. In order to avoid this awkward result, common practice is either replacing the negative values with zeros, or...

In this paper two indexes will be proposed. Customer Satisfaction of a service (e.g.: Degree Course) will be study through a "so called" formative model. It seems possible to breakdown the two indexes into three levels, which can be considered from bottom to top or crosswise, thus providing...

In this paper, we propose a set of overall indexes for measuring quality and satisfaction of a University Degree Course. These indexes are given by a linear combination of partial indexes according to the "Formative Model", like SERVQUAL or SERVPERF. The differences among them are due to unlike...