|Date: ||Mon, 24 May 1999 08:22:21 -0500|
|Reply-To: ||craig enders <cenders@UNLINFO.UNL.EDU>|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>|
|From: ||craig enders <cenders@UNLINFO.UNL.EDU>|
|Subject: ||new to glm, a couple of ?'s|
I am trying to convert from using manova to glm and have a couple
of questions about the glm output/calculations. First, a simple one.
In running a simple one-way anova in glm you get a sum of squares
value for the intercept term. How is that being calculated? Second,
I was running a mixed design that had a couple of missing data points.
In manova, these points were excluded and I was left with only cases
that had complete data in all cells. However, in running the same
analysis under glm I got slightly different results -- the df were
not integers. Unfortunately, I cannot remember if it was the between
or within factor that was affected (I think it was the within). What
is the difference in the calculations under glm when there are missing
observations? Also, if anyone could provide me a good reference
material on glm I would appreciate it.
Thanks in advance,