subplot(2,2,1)
hist(rand(1,100), 0.05:0.10:0.95);
title('A')
set(gca,'xtick',0:0.1:1);

subplot(2,2,2)
points = 0.005:0.010:0.995;
hist(points, 0.05:0.10:0.95);
title('B')
set(gca,'xtick',0:0.1:1);
set(gca,'ylim',[0 12]);

subplot(2,2,3)
pkg load statistics
hist(exprnd(0.1, 1,100), 0.05:0.10:0.95);
title('C')
set(gca,'xtick',0:0.1:1);

subplot(2,2,4)
hist(rand(1,100), 0.05:0.10:0.95);
title('D')
set(gca,'xtick',0:0.1:1);