Problem Note 58178: PROC GAMPL outputs incorrect upper and lower confidence limits when the PRED= option is omitted from the OUTPUT statement
In PROC GAMPL, if you specify the LOWER= or UPPER= option or both in the OUTPUT statement, and you omit the PRED= option, the confidence limits in the output data set are incorrect. If both limits are requested without the predicted values, the problem is obvious because the lower limit is larger than the upper limit.
To avoid the problem, request the predicted values when requesting either or both of the confidence limits.
Operating System and Release Information
| SAS System | SAS/STAT | z/OS | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| z/OS 64-bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft® Windows® for x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8 Enterprise 32-bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8 Enterprise x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8 Pro 32-bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8 Pro x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8.1 Enterprise 32-bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8.1 Enterprise x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8.1 Pro 32-bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 8.1 Pro x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows 10 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows Server 2008 | 14.1 | | 9.4 TS1M3 | |
| Microsoft Windows Server 2008 R2 | 14.1 | | 9.4 TS1M3 | |
| Microsoft Windows Server 2008 for x64 | 14.1 | | 9.4 TS1M3 | |
| Microsoft Windows Server 2012 Datacenter | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows Server 2012 R2 Datacenter | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows Server 2012 R2 Std | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Microsoft Windows Server 2012 Std | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Enterprise 32 bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Enterprise x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Home Premium 32 bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Home Premium x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Professional 32 bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Professional x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Ultimate 32 bit | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Windows 7 Ultimate x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| 64-bit Enabled AIX | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| 64-bit Enabled Solaris | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| HP-UX IPF | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Linux for x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
| Solaris for x64 | 14.1 | 14.3 | 9.4 TS1M3 | 9.4 TS1M5 |
*
For software releases that are not yet generally available, the Fixed
Release is the software release in which the problem is planned to be
fixed.
If you specify the LOWER= or UPPER= option in the OUTPUT statement in PROC GAMPL, the output limits are incorrect unless you also specify the PRED= option.
| Type: | Problem Note |
| Priority: | alert |
| Topic: | Analytics ==> Regression
SAS Reference ==> Procedures ==> GAMPL
|
| Date Modified: | 2017-06-27 15:26:35 |
| Date Created: | 2016-05-06 13:42:10 |
