After the orders have been separated into piles, it is a simple matter to count the number of orders in each pile to obtain the data from which curve "D" is plotted. It will be noticed from the shape of the curve that the upper and lower limits for each class are well selected so that there is a fairly uniform decrease in the number of orders in each group as the size of the orders increases. The order slips in the different piles sorted according to the size of the order are taken to an adding machine, and addition made to obtain the total number of packages carried by the combined orders found in any one pile or class. This gives the data from which curve "C" is plotted. Though curve "D" shows a constantly decreasing number of orders as the size of the orders becomes greater, curve " C " proves that there is an increasing number of packages handled as the orders grow larger toward the right-hand side of the chart.

Though there are not so many orders of large size as of small size, the small numbers of large orders nevertheless carry many more packages than the large numbers of small orders. The executive is, of course, interested in revenue and, for revenue purposes, as mentioned above, all packages may be considered of the same size. Revenue obviously depends upon the number of packages handled, rather than on the number of orders handled. Curve "C", then, shows at a glance that the small number of large orders are of much greater interest to the financial manager than the large number of small orders.