Two-Way ANOVA Post Hoc Tests Won't Run

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Two-Way ANOVA Post Hoc Tests Won't Run

Postby timclacy » Sat Apr 06, 2013 12:19 am

I have run a two-way ANOVA in SPSS

- Exercise Participation (3xGroups)
- Age (4xGroups)

- Confidence Levels

This study has been done on Females only.

Within one of the four Age Groups, there is only 1 female in '18-21 Years Old'. This means that the following warning message appeared:

"Post hoc tests are not performed for AgeGroupx4 because at least one group has fewer than two cases"

How do i get around this and get SPSS to do the post-hoc test, so i can see where the significant difference specifically is?

I've tried adding the female's details in twice, and the post hoc test comes up, is there anyway to get SPSS to do this without affecting the validity of my data?

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