Re: [bug #48040] GLM produces wrong output

[John Darrington]

On Fri, May 27, 2016 at 12:11:20PM -0500, Alan Mead wrote:
     
     
     From the output, it's possible this is all (or much) of the issue is due
     to the df being calculated wrong.  The error df somehow came out
     negative, which caused the error MS to be negative, which caused all the
     F's to be negative.

I had a brief look, and it seems that the first problem is the Mean Square Error
is negative.  If that is wrong, then almost everything else will be.
This comes from Jason's sweep operator.  Unfortunately Jason is no longer 
involved
in PSPP.
     

Let's start with a simpler example.  Can you tell me what SPSS does with this
syntax (using your original personality.sav):


GET FILE="personality.sav".

recode caution_score (lo thru 35=1) (36 thru hi=2) (missing=2) (else=copy) into 
x1.
recode extra_score (lo thru 31=1) (32 thru hi=2) (missing=2) (else=copy) into 
x2.
frequencies x1 x2.

GLM agree_score BY x1 x2.


     

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