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
values.
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.
Keywords:
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
MIPS ABI 8 TSM0
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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