Die Reichseisenbahnen

Bibliographic data

Monograph

Identifikator:: 881868930

URN:: urn:nbn:de:zbw-retromon-5857

Document type:: Monograph

Author:: Quaatz, Reinhold Georg http://d-nb.info/gnd/118892673

Title:: Die Reichseisenbahnen

Place of publication:: Berlin

Publisher:: Verlag von Julius Springer

Year of publication:: 1919

Scope:: 1 Online-Ressource (77 Seiten)

Digitisation:: 2017

Collection:: Economics Books

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

THEORY OF STATISTICS. read similarly to the last. Taking the first row, it tells us that there were 2811 men with blue eyes noted, of whom 1768 had fair hair, 807 brown hair, 189 black hair, and 47 red hair. Similarly, from the first column, there were 2829 men with fair hair, of whom 1768 had blue eyes, 946 grey or green eyes, and 115 brown eyes. The tables are a generalised form of the four- fold (2 x 2-fold) tables in § 13, Chap. IIL 4. For the purpose of discussing the nature of the relation between the A’s and the B’s, any such table may be treated on the principles of the preceding chapters by reducing it in different ways to 2 X 2-fold form. It then becomes possible to trace the association between any one or morc of the A’s and any one or more of the B’s, either in the universe at large or in universes limited by the omission of one or more of the 4’s, of the B’s, or of both. Taking Table I., for example, trace the association between the erection of houses and the urban character of a district. Adding together the first two rows—z.e. pooling London and the other urban districts together—and similarly adding the first two columns, so as to make no distinction between inhabited and uninhabited houses as long as they are completed, we find— Proportion of all houses which are in course of erection in {s0soto-— 10 per thousand. urban districts . . : Proportion of all houses which are in course of erection ot 12/1761= 7 ir rural districts . : HN There is therefore, as might be expected, a distinct positive association, a larger proportion of houses being in course of erection in urban than in rural districts. If, as another illustration, it be desired to trace the association between the ¢ uninhabitedness ” of houses and the urban character of the district, the procedure will be rather different. Rows 1 and 2 may be added together as before, but column 3 may be omitted altogether, as the houses which are only in course of erection do not enter into the question. We then have— Proportion of all houses which are uninhabited in urban [faze 66 per thousand. districts : Proportion of all houses which} are uninhabited in rural 124/1749=171 7° districts ( The association is therefore negative, the proportion of houses uninhabited being greater in rural than in urban districts. 62

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