https://ifx0.com/spss_trainer.html
learn independent sample T test.
game 2:
https://ifx0.com/spss_trainer_level2.html
game 3, 10 questions to test SPSS knowledge:
ifx0.com/spss_analysis_quest.html
game 4，survey 2
https://ifx0.com/spss_trainer.html
learn independent sample T test.
game 2:
https://ifx0.com/spss_trainer_level2.html
game 3, 10 questions to test SPSS knowledge:
ifx0.com/spss_analysis_quest.html
game 4，survey 2
