Regulations for His Majesty's colonial services

Bibliographic data

Monograph

Identifikator:: 1772010170

URN:: urn:nbn:de:zbw-retromon-156465

Document type:: Monograph

Title:: Regulations for His Majesty's colonial services

Place of publication:: London

Publisher:: His Majesty's Stationery Off.

Year of publication:: 1928

Scope:: 150 S., 1 Bl.; Ill.

Digitisation:: 2021

Collection:: Economics Books

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X.—CORRELATION : ILLUSTRATIONS AND METHODS. 195 engaged in agriculture, but the statistics of occupations are not given in the census for individual unions. Finally, it was decided to use a classification by density of population, the grouping used being—Rural, 0-3 person per acre or less: Mixed, more than 0°3 but not more than 1 person peracre: Urban, more than 1 person per acre. The metropolitan unions were also treated by them- selves. The limit 03 for rural unions was suggested by the density of those agricultural unions the conditions in which were investigated by the Labour Commission (the unions of Table VII, Chap. IX.): the average density of these was 0-25, and 34 of the 38 were under 0:3. The lower limit of density for urban unions—1 per acre—was suggested by a grouping of Mr Booth’s (group xiv.) : of course 1 person per acre is not a density associated with an urban district in the ordinary sense of the term, but a country district cannot reach this density unless it include a small town or portion of a town, ze. unless a large proportion of its inhabitants live under urban conditions. The method by which the relations between four variables are discussed is fully described in Chapter XII. : at the present stage it can only be stated that the discussion is based on the correlations between all the possible (6) pairs that can be formed from the four variables. 9. lustration ii, —The subject of investigation is the inheritance of fertility in man. (Cf. Pearson and others, ref. 3.) One table, from the memoir cited, was given as an example in the last chapter (Table IV.). Fertility in man (i.e. the number of children born to a given pair) is very largely influenced by the age of husband and wife at marriage (especially the latter), and by the duration of marriage. It is desired to find whether it is also influenced by the heritable constitution of the parents, 7.e. whether, allowance being made for the effect of such disturbing causes as age and duration of marriage, fertility is itself a heritable character. The effect of duration of marriage may be largely eliminated by excluding all marriages which have not lasted, say, 15 years at least. This will rather heavily reduce the number of records available, but will leave a sufficient number for discussion. It would be desirable to eliminate the effect of late marriages in the same way by excluding all cases in which, say, husband was over 30 years of age or wife over 25 (or even less) at the time of marriage. But, unfortunately, this is impossible ; the age of the wife—the most important factor—is only exceptionally given in peerages, family histories, and similar works, from which the data must be compiled. All marriages must therefore be included, whatever the age of the parents at marriage, and the

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