Since both the vertical scale and the

labels are put to the left of the bars, it may be more difficult to read the chart than if one or the other were placed to the right.

COMPARISON OF COMPONENT BAR CHARTS

torAt,

(hAMUo IN oMOcn or size or socio economic cmout in itso)

ill

i

i

^ MEN m WOMCN

'^ "i III i

nil

iii

ill

i

i

StUISKILLED

CLERICAL

SKILLED

UNSKILLED

DOMESTIC

PROPRIETX)RS.

PROFESSIONAL

VirORKERS

WORKERS

WORKERS

WORKERS

SERVANTS

MANAGERS

PERSONS

WPA, Nationnl Research Project. "Recent Trends in Employment and Unemployment in Philadelphia." December IQJ?. SCALE .7

A. Ex+ent and Character of Changes in fhe Types of Employment In Philadelphia for the Years 1910. 1920. and 1930.

Since there are no horizontal rulings, it might have been better to include the value of each bar as well as percentages of each component part.

^555,077,000

^96 0,227.4^5

^525,770 795 '278,999,555

Expended for public schools in 1914.

Increase over 1914 chargeable to decrease in purchasing power of dollar.

||H||jll||!l[y| Increase over 1914 chargeable to increased attendance. I I Increase over 1914 chargeable to increased services.

National Education Association. Washington. D. C "Research Bulletin," May 1038.

B. Estimated Causes of Increase in School Costs in the United States from 1914 to 1930.

This simple classification of reasons for the increase in school costs shows a great deal of study and forethought. A verbal statement would not have been half so effective. IS

URBAN

RURAL NON-FARM

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