Having completed several websites in my career, I am familiar with the bandwidth utilization of different websites. However as most of the sits are hosted in either unlimited packages (which implies that its shared amongst others) or 1-2GB monthly bandwidths there isnt any slow site loading times reported as yet.
My question is what is the best way to calculate the bandwidth needed for a typical website (for example, suppose you host the default Joomla page) with an estimated 2000 visitors per day? Would it be sufficient to simply divide 2000 by the page size? Or is there more to it?