Example 1 for PROC RSREG
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: RSREX1 */
/* TITLE: Example 1 for PROC RSREG */
/* PRODUCT: STAT */
/* SYSTEM: ALL */
/* KEYS: response surface regression */
/* PROCS: RSREG */
/* DATA: */
/* */
/* SUPPORT: Bob Derr */
/* REF: SAS/STAT User's Guide, PROC RSREG chapter */
/* MISC: */
/* */
/****************************************************************/
/*----------------------------------------------------------------
Frankel (1961) reports an experiment aimed at maximizing the
yield of mercaptobenzothiazole (MBT) by varying processing time
and temperature. From Myers, Response Surface Methodology 1976.
----------------------------------------------------------------*/
title 'A Saddle Surface Response Using Ridge Analysis';
data d;
input Time Temp MBT;
label Time = "Reaction Time (Hours)"
Temp = "Temperature (Degrees Centigrade)"
MBT = "Percent Yield Mercaptobenzothiazole";
datalines;
4.0 250 83.8
20.0 250 81.7
12.0 250 82.4
12.0 250 82.9
12.0 220 84.7
12.0 280 57.9
12.0 250 81.2
6.3 229 81.3
6.3 271 83.1
17.7 229 85.3
17.7 271 72.7
4.0 250 82.0
;
ods graphics on;
proc rsreg data=d plots=(ridge surface);
model MBT=Time Temp / lackfit;
ridge max;
run;
ods graphics off;