DATA hoel;                                                                      
* DATA IN THIS EXAMPLE IS FROM P. 312 of Campbell Paper on soil Sci. June 74 Sam Gordji;                                  
 INPUT X     Y;                                                                 
 x=log10(x) ;
 y=log10(-y);
 CARDS; 
.05 -7.5
.066 -4.4
.08  -2.0
.115 -.5
.13  -.3
.14  -.15
PROC PRINT;                                                                     
*OUTEST=data set;                                                                
PROC REG ;                                                            
MODEL y=x ;
proc reg; model x=y ;
proc corr; variables X Y;                                                                      
PROC MEANS SUM;                                                                 
data cecilb2;
input x y;
x=log10( x);
y=log10(y) ;
cards;
.3   1
.31  .5
.32  .3
.33  .15
;
 proc reg ; model y=x ;
data botany;
input x y;
x=log10(x) ;
y=log10(y) ;
cards;
.076  .05
.09   .045
.13   .043
.18    .042
.27   .041
.32   .04
; proc print;
proc reg ; model y=x;