Graphic Methods for Presenting Facts
B -= Distribution of packages
C -- Average cost per package for orders of various size
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FREQUENCY CURVES 193
taken at random. Because of the numerous commodities which were handled on which it was desirable to watch the cost of freight handling, the cost clerk figured the cost of any one commodity perhaps only one or two days in a month. Each morning the cost clerk would sort out all the labor tickets relating to some one particular commodity which had been handled on the preceding day. The cost per package would be figured up for each order ticket and, in the board reserved for that particular commodity, a tall pin would be placed for each order completed the preceding day, showing by the position of the pin the number of packages on the order and the cost per package of handling that particular order. In considering the pin marked 8 at the right of Fig. 159 we can see that it represents an order for 900 packages and that the cost per package was 1.1 cent.