Post-hoc comparison with covariate

[caspert79]

I'm trying to conduct a post-hoc analysis which simultaniously corrects for a covariate. I tried GLM --> Univariate but when I select a covariate, the post-hoc button turns inactive. Unfortunately I'm not a statistics genius.
Does anybody know a solution?

Thanks in advance,

Casper

[JohnM]

I assume you're using SPSS?

I found a link to a pdf document that describes this issue and covers the use of contrasts to get around the problem.

http://www.sussex.ac.uk/Users/andyf/teaching/rm2/ancova.pdf

[caspert79]

thank you very much. It could be very usefull to me.

[sosololo]

please i have the same problem please helpe me

I'm trying to conduct a post-hoc analysis which simultaniously corrects for a covariate. I tried GLM --> Univariate but when I select a covariate, the post-hoc button turns inactive. Unfortunately I'm not a statistics genius.
Does anybody know a solution?

Thanks in advance,

howcanshe@yahoo.com

[Reuben Trevino]

I'm hoping some one can help me if they no how to solve this problem... the above link is dead and I'm about done beating my head against this wall.

I need to run Scheffe's on my GLM univariate analysis with a covariate. Someone please help

rtrev16@gmail.com

Reuben T