An Introduction to the theory of statistics

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Monograph

Identifikator:: 1751730271

URN:: urn:nbn:de:zbw-retromon-127610

Document type:: Monograph

Author:: Yule, George Udny http://d-nb.info/gnd/12910504X

Title:: An Introduction to the theory of statistics

Edition:: 8. ed. rev

Place of publication:: London

Publisher:: Griffin

Year of publication:: 1927

Scope:: XV, 422 S; Ill., Diagr

Digitisation:: 2021

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Part I. The theory of atributes

Collection:: Economics Books

I.—NOTATION AND TERMINOLOGY. 5 whatever ; it merely excludes the other attributes noted in the particular investigation. Adjectives, as well as the symbols which may represent them, are naturally used in an inclusive sense, and care should therefore be taken, when classes are verbally described, that the description is complete, and states what, if anything, is excluded as well as what is included, in the same way as our notation. The terminology of the English census has not, in this respect, been quite clear. The “Blind” includes those who are ‘Blind and Dumb,” or “ Blind, Dumb, and Lunatic,” and so forth. But the heading “Blind and Dumb,” in the table relating to “combined infirmities,” is used in the sense “Blind and Dumb, but not Lunatic or Imbecile,” etc., and so on for the others. In the first table the headings are inclusive, in the second exclusive. REFERENCES. (1) Jevoxs, W, STANLEY, *‘On a General System of Numerically Definite Reasoning,” Memoirs of the Manchester Lit. and Phil. Soc., 1870. Reprinted in Pure Logic and other Minor Works; Macmillan, 1890. (The method used in these chapters is that of Jevons, with the notation slightly modified to that employed in the next three memoirs cited.) (2) Yur, G. U., “On the Association of Attributes in Statistics, ete.,” Phil. Trans. Roy. Soc., Series A, vol. cxciv., 1900, p. 257. (3) YULE, G. U., “On the Theory of Consistence of Logical Class-frequencies and its Geometrical Representation,” Phil. Trans. Roy. Soc., Series A, vol. exevii., 1901, p. 91. (4) Yur, G. U., “Notes on the Theory of Association of Attributes in Statistics,” Biometrika, vol. ii., 1903, p. 121. (The first three sections of (4) are an abstract of (2) and (3). The remarks made as regards the tabulation of class-frequencies at the end of (2) should be read in con- nection with the remarks made at the beginning of (3) and in this chapter : cf. footnote on p. 94 of (3). Material has been cited from, and reference made to the notation used in— (5) WARNER, F., and others, ‘ Report on the Scientific Study of the Mental and Physical Conditions of Childhood” ; published by the Committee, Parkes Museum, 1895. (6) WARNER, F., “Mental and Physical Conditions among Fifty Thousand Children, ete.,” Jour. Roy. Stat. Soc., vol. lix., 1896, p. 125. EXERCISES. 1. (Figures from ref. (5).) The following are the numbers of boys observed with certain classes of defects amongst a number of school-children. 4, denotes development defects ; B, nerve signs; C, low nutrition. (4B0) 149 (a BO) 204 (4ABy) 738 (aBy) 1,762 (480) 225 (aBC) 171 (4By) 1,196 (aBy) 21,842 Find the frequencies of the positive classes. 1:

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