In Fig. 153 it was shown that, because the curves were plotted on a "less than" basis, the curve showing the smaller length of time appears at the top of the chart, when one would naturally expect to find the smaller quantities of time recorded relatively toward the bottom of the chart. In Fig. 158 the data are plotted on a "more than" basis, and the curves are seen in their proper relation to each other. Since the reader knows that the chart is plotted on a "more than" basis (as can be seen by the words "more than" at the lower left-hand corner of the chart), he may know instantly that the curves relating to the two different departments show in their correct relation to each other. Curves "G" and "C" relate to one department, while curves "E" and "A" relate to another department. Curve "C" appears above curve "A" on the chart, and the reader may accordingly know without detail study that the department to which curve "C" relates handles larger orders than the department to which curve "A" relates. In a similar way, the upper portion of the

190 GBAPHIC METHODS

chart shows that the department to which curve "G" relates handles a larger percentage of the total number of packages and produces a larger percentage of the revenue than the department to which curve "E" relates. If this chart had been plotted on a "less than" basis instead of on a "more than" basis, the position of these two curves giving detailed information for the main curve "F" would be exactly reversed, Avith curve "E" appearing above the heavy line "F" and curve "G" appearing below the heavy line.