danryan.us

No edges can be added to the network on the left. It currently has 10 edges and so the ratio is $\frac {10} {10} = 1.0$. The middle network has 5 edges out of a possible 10; the ratio is $\frac {5} {10} = 0.5$. The network on the right has zero edges so the ratio is 0.0.