• • •31 '33

••32

30 40 50 60 70 80 90

PRODUCTION OF SWEETPOTATOES ( MILLIONS OF BUSHELS)

DEVIATION FROM A

(B) '

^'

^^23

■27

•

• •30

•

•

• •31

'34

•

300 320 340 360 380 400 420

PRODUCTION OF POTATOES ( MILLIONS OF BUSHELS)

90 100 no 120 130 140 150

INDEX OF FOOD PRICES (AV. JULY-JUNE; I9IOI9I4'IOO ) U. S. Department of ARriculturc, Bureau of AKricultural Economics.

The Relation of Sweetpotato Prices to Sweetpotato Production, Potato Production, and to Index of Food Prices in the United States from 1924 to 1934.

1. The small number of dots in these charts makes it possible to put the year which

each represents beside the dot.

2. Note that the center chart shows deviation from the data in the first one, and the

last one shows deviation from the center one.

CORRELATION CHARTS

WAGE EARNER FAMILIES OF -- CHICAGO DENVER

3D

On

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y

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y

,'^

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y^

too

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y

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y-27

4- I02X

CLOTMINO

PCRSOMAL CA,RE

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y

y^

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y

y

y

y

y

Y. 8+.

>I7 X

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V- 6 +

oirx

OirTS AMD TAXES

KOO JOCO 40CO tOOO

rCAHiy INCOME

tto

^

'

^

lOO

to

o

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^

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-2I+04IX

D. H. Kaplan, "Expenditure Patterns of Urban Families, ciation. March 1938

Journal of the American Stmtiitical Asso- Straight Line Fitted to Average Expenditures in Relation to Family Income in Wage-Earner Families of Chicago, Illinois, and Denver, Colorado, in 1935- 1936.