SAS Institute Alert Note SN-004462

From: SAS Technical Support (LISTSERV@VM.SAS.COM)
Date: Fri Mar 23 2001 - 10:10:43 EST

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    SN-004462 Alert Note

    Incorrect Q-Q and probability plots when missing values are present

      Product: Base SAS
    Component: UNIVARIATE procedure
     Priority: ALERT

      Graphs generated with the QQPLOT and PROBPLOT statements in PROC
      UNIVARIATE will be incorrect when the analysis variable has missing

      To circumvent this problem, either use PROC CAPABILITY in SAS/QC
      Software or specify a WHERE statement to omit the missing values in PROC
      UNIVARIATE. For example:

         Where X is not missing;

      if your analysis variable is called X. If a summary of missing values
      is also needed, then run PROC UNIVARIATE twice--once with and once
      without the missing values.

      qqplot probplot quantile probability plot missing value values incorrout
      incorrect q-q and probability plots when missing values are present
      004462 4462

    SAS Note Revised On: Fri, 9 Mar 2001

    System Version Reported Version Fixed

    AIX 64 bit 8.2 TS2M0
    AIX/6000 8 TSM0
    VM/ESA (CMS) 8 TSM0
    Compaq Tru64 UNIX 8 TSM0
    HP-UX Operating Systems 8 TSM0
    HP-UX 64 bit 8.2 TS2M0
    Intel ABI 8 TSM0
    Intel ABI 8.2 TS2M0
    Linux 8.2 TS2M0
    OS/390 (MVS) 8 TSM0
    IBM OS/2 8 TSM0
    Solaris 8 TSM0
    Solaris 64 bit 8.2 TS2M0
    OpenVMS VAX 8 TSM0
    OpenVMS Alpha 8 TSM0
    Windows NT 8 TSM0
    Windows 2000 Datacenter Server 8 TSM0
    Windows 2000 Datacenter Server 8.1 TS1M0
    Windows 2000 Professional 8 TSM0
    Windows 2000 Professional 8.1 TS1M0
    Windows 2000 Server and Advanced Server 8 TSM0
    Windows 95 8 TSM0
    Windows 98 8 TSM0
    Windows ME 8.2 TS2M0

    No Fixes Available

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