x=[12 9 21 14 7 17];
y=[5  9 3  11 8 19];
%y=[5  9 3  11 8 19 7 5 9 12 5 11 9 6 8 17 9 12];
disp('test Wilcoxona-Manna-Whitneya: ');
[p, h, stats]=ranksum(x,y,.05)
disp('test Wilcoxona-Manna-Whitneya: ');
[p, h, stats]=ranksum(y,x,.05)
