macro
sim nrep

mcolumn resp acol bcol ccol CP SO RO noise
mconstant nrep sd

FFDesign 3 8;
Alias 3;
XMatrix acol bcol ccol.

let sd=sqrt(10/nrep)
let resp=120+.5*acol+2.0*acol*bcol+ccol
rand 8 noise;
norm 0 sd.
let resp=resp+noise

FFactorial Resp=acol|bcol|ccol;
Geffects 0.2;
Rtype 1.

endmacro