About the Authors

Marek Walesiak

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Econometrics and Computer Science, Wroclaw University of Economics and Business, Wrocław, Poland

Grażyna Dehnel

Roles Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing

grazyna.dehnel@ue.poznan.pl

Affiliation Department of Statistics, Poznań University of Economics and Business, Poznań, Poland

Competing Interests

NO authors have competing interests Enter: The authors have declared that no competing interests exist.