Mexico

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Monograph

Identifikator:: 1780202415

URN:: urn:nbn:de:zbw-retromon-166228

Document type:: Monograph

Author:: Sapper, Karl http://d-nb.info/gnd/116805382

Title:: Mexico

Edition:: 2., vollst. neubearb. Aufl. der "Wirtschaftsgeographie von Mexico"

Place of publication:: Wien

Publisher:: Seidel

Year of publication:: 1928

Scope:: 164 Seiten, [8] Blätter; Ill., Kt.

Digitisation:: 2021

Collection:: Economics Books

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Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: II. Wirtschaftsgeschichtliche Skizze

Collection:: Economics Books

- THEORY OF STATISTICS. That is to say, if the weights and variables are positively correlated, the weighted mean is the greater ; if negatively, theless. In some cases r is very small, and then weighting makes little difference, but in others the difference is large and important, » having a sensible value and o,0,/@ a large value. 17. The difference between weighted and unweighted means of death-rates, birth-rates or other rates on the population in different districts is, for instance, nearly always of importance. Thus we have the following figures for rates of pauperism (Jour. Stat. Soc., vol. lix. (1896), p. 349). Percentages of the Population in receipt of Relief. January 1. Arithmetic Mean England and of Rates in Wales as a different Districts. whole. 1850 6°51 5-80 1860 5-20 4°26 1870 545 4°77 1881 368 3°12 1891 3:29 2°69 In this case the weighted mean is markedly the less, and the correlation between the population of a district and its pauperism must therefore be negative, the larger (on the whole urban) dis- tricts having the lower percentage in receipt of relief. On the other hand, for the decade 1881-90 the average birth-rate for England and Wales was 32:34 per thousand, the arithmetic mean of the rates for the different districts 30-34 only. The weighted mean was therefore the greater, the birth-rate being higher in the more populous (urban) districts, in which there is a greater proportion of young married persons. For the year 1891 the average population of a Poor-law district was found to be roughly 45,900 and the standard-deviation o, 56,400 (populations ranging from under 2000 to over half a million). The standard-deviation o, of the percentages of the population in receipt of relief was 1:24. We have therefore, for the correlation between pauperism and population, 3:29 — 2:69 459 r= ———— X 1-24 564 amr 0 222 J.3G.

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