WED 2/24/99 11:36:33 AM

SYSTAT VERSION 7.0.1
COPYRIGHT (C) 1997, SPSS INC.

Welcome to SYSTAT!

NOTE: the following commands can be used to plot the response surfaces for

problems 7.38 and 7.39 p. 323 in NKNW.  Each response surface is plotted

3 times with different appearance options.

>fplot y = 14+7*x1+5*x2-4*x1*x2; stick xmin=0 xmax=5 ymin=0 ymax=5

>fplot y = 14+7*x1+5*x2-4*x1*x2; stick xmin=0 xmax=5 ymin=0 ymax=5 contour

>fplot y = 14+7*x1+5*x2-4*x1*x2; stick xmin=0 xmax=5 ymin=0 ymax=5 surface=xycut

>fplot y = 25+3*x1+4*x2+1.5*x1*x2; stick xmin=0 xmax=7 ymin=0 ymax=7

>fplot y = 25+3*x1+4*x2+1.5*x1*x2; stick xmin=0 xmax=7 ymin=0 ymax=7 contour

>fplot y = 25+3*x1+4*x2+1.5*x1*x2; stick xmin=0 xmax=7 ymin=0 ymax=7 surface=xycut

Last modified 24 February 1999