Methodological Approach to Multidimensional Exploratory Evaluation of the Taxis (Taxation Information System) Usefulness : Greek Economy in Perspective

The Multidimensional Exploratory Evaluation of the TAXIS Usefulness was performed using a questionnaire that consisted of subject questions (variables), each one of which comprised a set of clarifying sub-questions, in the form of an evaluation scale. The answers (data) were supplied by the employees (users) of the Public Financial Services. With the statistical processing of the data, using Data Analysis methods, we aspire to initially determine, via the subject variables, the factors that materially, positively or negatively affect the users of TAXIS. At a second stage, we shall investigate each one of those subject variables and we shall locate the clarifying sub-questions to which the users' opinion is mainly due.The final research results showed that: (a) the most negatively valuated quality is subject variable E7, mainly concerning the communication speed and the use of obsolete technological equipment, as it occurred from the explanatory questions, while (b) the most positively valuated subject unit is E5, mainly concerning the correctness of the calculations and the security of the transactions. However, we mainly focused on the methodological approach of Data Analysis, and mostly on the highlighting of the equivalence of the supplementary element in the correspondence analysis, using the regression analysis quantitative method, and matching the supplementary element to the dependent variable