Committee on Public Relations of the Eastern Railroad. N. Y. C, "A Yearbook of Railroad Information." 1937.

A Comparison of the Distribution of the Average Dollar of Operating Revenues Received by Class I Railways in 1916 and 1936.

This might be called a cumulative sector chart. Note that in each circle the total of all that has been presented above it is represented by a shaded section, while the part to be added is in black.

Chapter 10 100% BAR CHARTS

one hundred per cent bar chart is one in which a single bar represents 100% and the divisions of the bar represent percentages of the whole. Synonyms for 100% bar chart are: percentage bar chart, relative bar chart, component parts bar chart.

CHARACTERISTICS OF A 100% BAR CHART:

1. A straight bar is easy to divide into parts representing approximate percentages, and is more convenient to use than a sector chart.

2. The sections may be shaded or colored for contrast.

3. Groupings of the parts are possible by using brackets or engineering dimension lines.

4. A percentage scale outside the bar is more easily read.

5. To aid in using the chart for reference purposes, the actual value of the bar and its component parts should be given.

6. To eliminate any need for turning the bar, the labels should read from left to right horizontally wherever possible.

7. The bar should be wide enough to allow for differentiation, and yet not so wide that the facts presented are distorted.