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Chapter I. Component Parts 1
The need for graphic methods in presenting facts. The method of presentation
as important as the data. Possibility for standard methods of
presentation. Tabulated figures versus graphic methods. A total shown
with its component parts. The horizontal bar. The circle and sectors.
Subdivision of components. Separate bars totalling 100 per cent. Charts
giving numerous subdivisions. Organization charts. Routing charts
for manufacturing plants and offices.
Chapter II. Simple Comparisons 20
Errors due to comparing by areas or by volumes instead of by one
dimension only. The use of graphic methods in geography books. The data
should be shown on the face of each chart if possible. Good and bad
methods of including the data. "Eye-catchers" to attract the attention
of the reader. Criticisms of methods commonly used. Certain bars
made especially prominent. Increases and decreases. Lines connecting
different bars. Examples of various good methods.
Chapter III. Simple Comparisons Involving Time 36
Impossibility of accurate interpretation when circles of different size are
compared. Errors when pictures of the human figure in different size are
compared. Methods which are popular and accurate as well. Examples of
bad practice in arrangement and the same data correctly represented.
Vertical bars giving the general effect of a simple curve. Curve plotting.
Chapter IV. Time Charts 53
Horizontal bars drawn to a scale of time. Complex time charts by which
the relations of numerous horizontal bars may be studied. Time charts
showing bars combined with a curve expressing totals. Curves to study
whether time schedules are maintained. Rank charts to portray the rank of
different individuals at various times. Rank charts showing actual relative
rank at any time and also changes in rank at various times. Train-dispatching
charts. Time-distance curves.
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CONTENTS
