Grundsätze der Volkswirtschaftslehre

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Monograph

Identifikator:: 1752429486

URN:: urn:nbn:de:zbw-retromon-127700

Document type:: Monograph

Author:: Franklin, Benjamin http://d-nb.info/gnd/118534912

Title:: Essays of Benjamin Franklin

Place of publication:: New York

Publisher:: G. P. Putnam's Sons

Year of publication:: 1927

Scope:: xi, 273 Seiten

Digitisation:: 2021

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: XX. Comparison of Great Britain and the United States in regard to the basis of credit in the two countries

Collection:: Economics Books

IX.—CORRELATION. 175 any definite trend, to right or to left, upward or downward. Two variables for which = is zero are, however, conveniently spoken of as uncorrelated. Table VI. and fig. 39 will serve as an illustration of a case in which the variables are almost uncor- related but by no means independent, » being very small (- 0'014), but the coefficient of contingency C (for grouping of qu. 3) 0-47. Figs. 36, 37, 38 are drawn from the data of Tables II., III., and IV., for which » has the values +091, + 0-51, and + 0-21 respec- tively, the correlation being positive in each case. The student Num?™ -» Ff Mothers Children. ) he RR F16. 38.—Correlation between number of a Mother's Children and number of her Daughter’s Children (Table 1V.): means of rows shown by circles and means of columns by crosses : #= + 0°21. should study such tables and diagrams closely, and endeavour to accustom himself to estimating the value of » from the general appearance of the table. 13. The two quantities 0, a, b, = i b, = tr are termed the coefficients of regression, or simply the regressions, b, being the regression of z on y, or deviation in z corresponding on the average to a unit change in the type of y, and b, being pm. aL

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