A Lorenz chart gives frequency distribution when both the variable and invariable quantities are reduced to percentages. The curve is plotted on a grid on which both the horizontal and the vertical scales represent 100%.

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A. Actual Wage Distribution of 381.- 575 Workers in the United States in 1917.

1. The dotted line in this chart represents the normal wage distribution based on the average wage for 1917.

2. An "ogive" chart is better known as

a "more-than, less-than" chart. Cumulative frequency data is presented in such a curve.

Charles N. Young, "Creative Ability and Its Compensation," Industrial Management, January 1920.

PER CENT or TOTAL PRODUCTION Oft RUNS

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0 I 2 J 4 $ 6 T e <) 10 II 17 13 14 IS 16 n 18 19 20 21 n U NUMBER OF COMPANIES

Joseph E. Pogue, "Economics of the Petroleum Industry," March liJiQ, The Chase National Bank of the City of New York.

B. Concentration of Production and Refining in the United States in 1937; Chart Showing Cunnulative Percentages of National Totals Represented by Largest Units.

OGIVE AND LORENZ CHARTS

Henry S. Dfnniton. "ManBBrmcnt and the Buiinets Cycle." Journal of the American StatUticnl Association. Washington. D C . March 1922. SCALE .8