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 ===================== To manage your subscription to SPSSX-L, send a message to [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 |
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 ===================== To manage your subscription to SPSSX-L, send a message to [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 ===================== To manage your subscription to SPSSX-L, send a message to [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 |
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 ===================== To manage your subscription to SPSSX-L, send a message to [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 |
Free forum by Nabble | Edit this page |