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SPSS errors when running a regression

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SPSS errors when running a regression

Alina Sheyman-3
Hi all,
 I'm running a liner regression in SPSS and am getting the following error
message -
"For models with dependent variable Tenure of Drops (Month), the following
variables are constants or have missing correlations: status_new. They will
be deleted from the analysis."

The only thing that's special about this particular variable is that it's
dichotomous with values of either 0 or 1. I've used variables like this in
building regressions in the past and have never encountered any errors. Any
idea what exactly might be causing this error to occur?

thank you

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Re: SPSS errors when running a regression

Swank, Paul R
Are you sure that for this DV, there is variability in status_new?


Paul R. Swank, Ph.D. Professor
Director of Reseach
Children's Learning Institute
University of Texas Health Science Center-Houston


-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of
Alina Sheyman
Sent: Tuesday, October 30, 2007 11:18 AM
To: [hidden email]
Subject: SPSS errors when running a regression

Hi all,
 I'm running a liner regression in SPSS and am getting the following
error message - "For models with dependent variable Tenure of Drops
(Month), the following variables are constants or have missing
correlations: status_new. They will be deleted from the analysis."

The only thing that's special about this particular variable is that
it's dichotomous with values of either 0 or 1. I've used variables like
this in building regressions in the past and have never encountered any
errors. Any idea what exactly might be causing this error to occur?

thank you

=====================
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[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command SIGNOFF SPSSX-L For a list
of commands to manage subscriptions, send the command INFO REFCARD

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Re: SPSS errors when running a regression

Henry Crawford
In reply to this post by Alina Sheyman-3
SPSS unfortunately tends to be correct when giving this error -- so where
is our mistake?

Either status_new has only one value for all cases in the file or, in case
you've run the frequency and found this not to be true, it only has one
value FOR THE CASES THAT SPSS KEEPS FOR THE REGRESSION.  With pairwise
deletion, any cases with missing values FOR ANY of the variables (dependent
or independent) will be dropped from the equation.

I think it's very likely you have at least one variable in your regression
with missing values perfectly correlated with one of the two values of
status_new, leaving status_new with only one value among cases included..

-Hank


On Tue, 30 Oct 2007 12:18:12 -0400, Alina Sheyman <[hidden email]>
wrote:

>Hi all,
> I'm running a liner regression in SPSS and am getting the following error
>message -
>"For models with dependent variable Tenure of Drops (Month), the following
>variables are constants or have missing correlations: status_new. They will
>be deleted from the analysis."
>
>The only thing that's special about this particular variable is that it's
>dichotomous with values of either 0 or 1. I've used variables like this in
>building regressions in the past and have never encountered any errors. Any
>idea what exactly might be causing this error to occur?
>
>thank you

=====================
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[hidden email] (not to SPSSX-L), with no body text except the
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