MACRO
sampdistsim nsamps outcol
MCONSTANTS nsamps
MCOLUMNS outcol c1 C2 C3 C4

random nsamps c1;
uniform 0 1.
random nsamps c2;
uniform 0 1.
Let c3 = 0*(c1 <= 0.1) + 1*((c1 >0.1) & (c1 <= 0.3)) + 2*((c1 > 0.3) & (c1 <= 0.7)) + 3 * (c1 > 0.7)
Let c4 = 0*(c2 <= 0.1) + 1*((c2 >0.1) & (c2 <= 0.3)) + 2*((c2 > 0.3) & (c2 <= 0.7)) + 3 * (c2 > 0.7)
let outcol=c3+c4
Chart outcol;
Percent;
Bar.
ENDMACRO