Stata Spss Sas. Usually your data could be analyzed in multiple ways each of which could yield legitimate answers. You can then choose something else as a backup either sas r or stata based on availability and which makes most sense to you logically.
The software consists of different modules some of which follow completely different operating concepts and the training for sas is correspondingly complex. Choosing the correct statistical test in sas stata spss and r the following table shows general guidelines for choosing a statistical analysis. Sas is a powerful and very stable tool which is particularly well utilized by large organizations and has become the quasi standard for many analyses in the pharmaceutical sector.
For additional information on sas see itservices usc edu stats sas.
We emphasize that these are general guidelines and should not be construed as hard and fast rules. Tasks in sas are carried out using a graphical user interface gui or through command line programming. For additional information on sas see itservices usc edu stats sas. Spss has licensed software that can be used as trial ware or saas software as a service.