I teach federal public - Pernambuco - Brazil and need
urgently, the software PSPP conduct parametric (Post Hoc) tests of multiple comparisons
and Tukey Duncan. Thanks for listening. Robson Mascarenhas - Petrolina - Pernambuco - Brasil Instituto Federal do Sertão Pernambucano - IF- Sertão PE http://www.ifsertao-pe.edu.br/reitoria/