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SCALE 7

B. Textile Fiber Consunnption in the United. States fronn 1925 to Novennber 1938.

Index numbers may be plotted on rate-of-change paper, especially when there is a growth as great as rayon consumption.

GRAPHIC PRESENTATION

Abstracts from Time Series Charts. A Manual of Design and Construction, 1938, prepared by Committee on Standards for Graphic Presentation, under procedure of American Standards Association, with The American Society of Mechanical Engineers as sponsor body.

RATE-OF-CHANGE CHARTS

A. DEFINITION. The rate-of-chonge chart ("rotio" or "semi-logarithmic" chart) is a type used for picturing the percentage or relative change in values of a series over a period of time rather than the change in absolute amounts as shown by the arithmetic chart.