Nationale Bodenreform

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Monograph

Identifikator:: 1689579730

URN:: urn:nbn:de:zbw-retromon-103299

Document type:: Monograph

Author:: Freese, Heinrich http://d-nb.info/gnd/118535153

Title:: Nationale Bodenreform

Edition:: Zweite Auflage

Place of publication:: Berlin

Publisher:: Druck und Verlag von U. Weichert

Year of publication:: [1926]

Scope:: XVI, 472 Seiten

Digitisation:: 2020

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: 4. Der einzige Rettungsweg

Collection:: Economics Books

176 THEORY OF STATISTICS, similarly the regression of » on x. Whilst the coefficient of correlation is always a pure number, the regressions are only pure numbers if the two variables have the same dimensions, as in Tables I.-IV. : their magnitudes depend on the ratio of o,/o,, and consequently on the units in which «# and y are measured. They are both necessarily of the same sign (the sign of 7). Since r is Proportion of Male births per 1000 births. ~ = 3 10, 5 2 3 20, < 10 S Fre. 39. Correlation between births in a Registration District and Propor- tion of Male Births per thousand of all births (England and Wales, 1881-90, Table VI.): means of rows shown by circles and means of columns by crosses : r= — 0014. not greater than unity, one at least of the regressions must be not greater than unity, but the other may be considerably greater if the ratio a,/o, or o,/o, be great. The name regression arose from the term being first introduced in the case of inheritance of stature (Galton, refs. 2, 3). In this case the two standard devia- tions are very nearly equal, so that both 5, and &, are less than unity, say (using the more recent data of Table III.) 0-50 and 0-52.

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