t Frequencies at extreme ends of the curve cannot be determined from this probability paper. Marked values have been roughly estimated to make the total approach 100%.

Brown. Bingham, and Temnomeroff, ■Laboratory Handbook of Statistical Methods," McGraw-Hill. lOJl.

The three tables on this page and page 334, and 333B were used in a hypothetical case to figure out how to distribute 100,000 shirts according to neck sizes. The column at the extreme right of the table above gives the distribution as determined by the use of probability paper.

333B was plotted from the information in the extreme right column of the table 334A. The third column (the one labelled "Normal Cumulative Frequency Reading, Per Cent of Total) in the table above was read from 333B.

REFERENCES ON PROBABILITY PAPER

Haskell, Allan C, Graphic Charts in Business, Codex Book Co.,

Inc., New York, 1926. Karsten, Karl G., Charts and Graphs, Prentice-Hall, Inc., New

York, 1923. Whipple, George C, "The Element of Chance in Sanitation,"

Journal of The Franklin Institute, July and August, 1916.

lll=lll=lll=lll=lil

GRAPHIC PRESENTATION

PERCENT

)ALE5

•1

• 1

• 1

• /

r 1

4^

•

f

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i

/ /

/

/

•

• • • •

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0 20 40 60 80 100

PERCENT NUMBER FIRMS

Redrawn from United States Department of Commerce. SCALE .9

Distribution of Wholesale Sales by Size of Firm for the United States According to the 1930 Census.

1. The "line of equal distribution" is drawn in this Lorenz chart. The distance between