Graphic Presentation
If this chart is turned so that the left side becomes the base line, the similarity between it and other frequency charts is more easily seen.
2. The shaded areas and the use of numbers to give a key to the states are good techniques.
318 ■
GRAPHIC PRESENTATION
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WaihiriKton, D. C Section of the A.S.M.E., "The Economic Status of Enninecrs in the Federal Service," Mechanical EngineerinK, February 1930.
Comparison of the Salaries of the Professional Staff of the National Bureau of Standards in August 1928 With the Salaries of Persons Holding the Same Type of Position Outside the Federal Service.
The 5 curves labelled as follows: "lower boundary of maximum 10 per cent," "lower boundary of maximum 25 per cent," "median," "upper boundary of minimum 25 per cent," and "upper boundary of minimum 10 per cent" refer to the distribution of persons in a similar occupation outside the Federal Service. Only the heavy line represents salaries in the Federal service, as indicated by the key.