1. Faculty of Management, Accounting and Economics, Universidade Federal de Goiás, Goiania, Brazil
2. Department of Statistics, Universidade Estadual de Campinas, São Paulo, Brazil
3. Department of Statistics, Universidade de Brasília, Brasília, Brazil
4. School of Industrial Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile