SPSS data analysis, data management, tool development and other services.
Sigma Plus Consulting specializes in everything SPSS: we offer SPSS data analysis, tool development, data management and training. If you have any other SPSS related requests, please contact us. We’ll be more than happy to help out.
Sigma Plus Consulting is based in Amsterdam, the Netherlands and offers services to Dutch as well as foreign clients.
For some 250 free SPSS tutorials, you may want to visit our website www.spss-tutorials.com as well.