from the right-hand scale Curve "C" shows by small circles the total number of pieces (or packages) carried by the various orders

which are found in each group. Curve "C" is read from the left-hand scale Curve "A" shows the percentage of the total orders handled which contain more than any given number of

pieces considered on the horizontal scale of the chart Curve " B " shows the percentage of the total number of pieces carried by those orders containing more than

any given number of pieces considered on the horizontal scale of the chart Curves "D" and "A" refer to the number of orders or the amount of clerical work while curves "C" and

"B" relate to the number of packages handled or the actual volume of business transacted

In Fig. 157 we have an application of the cumulative frec[uency curve to a class of work which would be extremely difficult to understand if the graphic method were not used. In handling large quantities of freight the different orders cover many diverse kinds of material, and the jobs vary from one package up to many thousands of packages on one order. The pieces or packages referred to here may be anything from a single casting weighing 20 tons to a shipment of canned goods with 5,000 boxes or cases on a single shipping order. In the long run, however, the different classes of goods could be averaged, and it will be found that in any one locality there would be but shght