options crt, limwarn=0; 
freq q; smpl 47:1 95:3;
read(file='ex66.xls', format=excel) gcq gydq;
consum=gcq;
yd=gydq;


smpl 50:3 88:1;
coint consum yd;
olsq consum c yd;

smpl 50:3 95:3;
coint consum yd;
olsq consum c yd;

smpl 47:1 95:3;
coint consum yd;
olsq consum c yd;

end;stop;