Graphic Methods for Presenting Facts
Thus in Fig. 208 it is much easier than in Fig. 207 to see that sales dropped seriously in the first half of 1911, and that they increased far beyond any previous record during the last half of 1911. The vertical arrangement is useful for one purpose : the horip . '^
q:
u- p
p-i to isil
^ UtOU p
p ? P p p p p J
b b 1 oooooooooo ',
QOOOOQOOOO A
(9
w ro
u
109. aze
\
\
\
' ^ 343,631 Q
i3a,a9« M
ngtooz ^
/
\
159.B7S -J
l.sis.iga
a
a
* 9*
\
\
/
lo3,9e=) ,.-._, >
s
\
\
136.115 i
\33.-2a'r J.
1T4.9IZ ^
p
130,03«. 3.
\
i
f
,'
/
o f3
u
■4
s
\
in.\-33 ?
146.367
'=='■'''" 4.s,n.
1-26,370 X tOB,00& N
\
\
/
'
>
c
cr ■6
266 GRAPHIC METHODS
zontal arrangement, is useful for another purpose. By having loose cards, we can arrange the cards either horizontally or vertically and get all the advantages of either position. Curves plotted in loose-leaf books, or on large sheets of paper, cannot have this flexibility of arrangement, and they accordingly handicap the executive in the analysis of data which may be vital to the success of his business.
When the cards are arranged horizontally the figures for the curve over a series of years are in plain sight, while in the vertical arrangement one card hides the figures on another card. Figures are essential to the true interpretation of curves like those seen in Fig. 208. In looking at Fig. 208 most readers are likely to feel that the business of the year 1911 was much better than the business of the year 1910. When we look at the total figures, however, we see that the sales for the year 1911 were only $1,435,041, while the sales for 1910 were $1,575,298.