0 10 20 30 40 50 0 0 0.05 0.1 0.15 0.2 0 Probability Random Variable N=500, r=50, n=50 N=500, r=50, n=100 N=500, r=50, n=250 N=500, r=50, n=400 N=500, r=50, n=450 Hypergeometric Distribution PDF