GMACRO
REGMEAN
echo
Random 500 C1;
Normal 50 10.
Random 500 C2;
Normal 0 5.
Random 500 C3;
Normal 0 5.
Add C1 C2 C4.
Add C1 C3 C5.
Name C1= 'true'  C2 = 'x error'  C3 = 'y error'  C4 = 'X'  C5 = 'Y'
Describe C1-C5 
Histogram C4
Histogram C5
Correlation C4 C5
Plot C5 * C4;
Symbol 'x'.
Copy C4 C5 C1-C3  C6-C10; 
use C4 = 0:50.
Name C6='New x'  C7='New y'  C3='New t' C9='New xe'   C10='New ye'
Describe C6 C7
Histogram C6
Histogram C7
Sign C9
Sign C10 
COPY C4 C5 C1-C3 C6-C10;
use C4 = 50:100.
Describe C6 C7
COPY C4 C5 C1-C3 C6-C10; 
use C4 = 0:40.
Histogram  C6
Histogram C7
Describe C6 C7 
Sign C9 
Sign C10
ENDMACRO