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PM48792: NPTESTS PROCEDURE DOES NOT PRODUCE PAIRWISE COMPARISONS FOR KRUSKAL-WALLIS TEST

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APAR status

  • Closed as fixed if next.

Error description

  • You're running a Kruskal-Wallis test in the NPTESTS procedure
    (Analyze>Nonparametric Tests>Independent Samples in the menus)
    and have a significant overall result. However, when you open
    the Model Viewer and attempt to view the results for Pairwise
    Comparisons you see a warning stating: "Pairwise Comparisons
    view encounters some problems and cannot be shown correctly!"
    
    The problem here is likely due to the existence in the data of
    cases with valid values on the grouping variable but not on the
    dependent. If there exists an "empty group" created by these
    cases and the coding value for that group is lower than that for
    at least one valid group, this error is observed. We apologize
    for this problem and it will be fixed in a future release. For
    the time being, you can work around it by using SCOPE=LISTWISE
    on the MISSING subcommand (you can paste the command syntax from
    the dialog boxes and edit the MISSING subcommand). You can also
    work around it by removing cases that are missing on the
    dependent variable from consideration by the procedure by
    filtering or selecting them out prior to running the procedure.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users working with Nonparametric tests                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * You're running a Kruskal-Wallis test in the NPTESTS          *
    * procedure                                                    *
    * (Analyze>Nonparametric Tests>Independent Samples in the      *
    * menus)                                                       *
    * and have a significant overall result. However, when you     *
    * open                                                         *
    * the Model Viewer and attempt to view the results for         *
    * Pairwise                                                     *
    * Comparisons you see a warning stating: "Pairwise Comparisons *
    * view encounters some problems and cannot be shown            *
    * correctly!"                                                  *
    *                                                              *
    * The problem here is likely due to the existence in the data  *
    * of                                                           *
    * cases with valid values on the grouping variable but not on  *
    * the                                                          *
    * dependent. If there exists an "empty group" created by these *
    * cases and the coding value for that group is lower than that *
    * for                                                          *
    * at least one valid group, this error is observed.            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * This issue is resolved with IBM SPSS Statistics 21 release   *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PM48792

  • Reported component name

    SPSS STATISTICS

  • Reported component ID

    5725A54ST

  • Reported release

    J00

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-09-27

  • Closed date

    2012-08-29

  • Last modified date

    2012-08-29

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels

  • RL00 PSN

       UP

  • RL00 PSY

       UP

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Document Information

Modified date:
29 August 2012