Hi
On Mon, 18 Nov 2002, Rob Weisskirch wrote:
> TIPS folk,
>
> I'm having an SPSS hardship on a research project I'm working on. I have
> not found someone who can help me figure this out on my campus. Perhaps a
> TIPster could help?
>
> I am trying to analyze data using a 2X5 ANOVA. I have two independent
> variables and one dependent variable. The IVs are ethnicity (5 groups)
> and citizenship (2 groups--yes/no) and DV score on a measure (continuous
> variable).
>
> I know there is a main effect for ethnicity on score.
> There is no main effect for citizenship on score.
> There is an interaction for ethnicity and citizenship on score.
>
> So, here's the question:
>
> I want to analyze the differences for each ethnic group whether or not
> they are citizens for score. So, for example, I want to know if it
> matters whether or not Latinos are citizens on their score.
>
> I can get the interaction effects, but I can't figure out how to get SPSS
> to reveal the statistics I'm interested in. My SPSS book says to use an
> /L matrix, but I'm having trouble figuring out how to set up the syntax.
> Does anyone know how to attain what I'm looking for?
The analysis is relatively straightforward using the SPSS manova
command (which is available in the syntax window). For your
example, the analysis would be:
manova score by eth(1 5) cit(1 2)
/design cit w eth(1) cit w eth(2) cit w eth(3)
cit w eth(4) cit w eth(5) eth
My limited reading so-far on GLM suggests these simple effects
are more difficult to get (as you note, involving a full /L
matrix). One source I read even suggested using MANOVA to ensure
that your GLM coding was correct. It is also quite simple to do
the above analysis using regression, if you preferred.
Best wishes
Jim
============================================================================
James M. Clark (204) 786-9757
Department of Psychology (204) 774-4134 Fax
University of Winnipeg 4L05D
Winnipeg, Manitoba R3B 2E9 [EMAIL PROTECTED]
CANADA http://www.uwinnipeg.ca/~clark
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