THEORY OF STATISTICS. 
REFERENCES. 
Illustrative Applications, principally to Economic Statistics, 
and Practical Methods. 
(1) Yue, G. U., ‘‘ On the Correlation of total Pauperism with Proportion ot 
Out-relief,” Economic Jour., vol. v., 1895, p. 603, and vol. vi., 1896, 
p. 613. 
(2) YuLg, G. U., “An Investigation into the Causes of Changes in Pauperism 
: in England chiefly during the last two Intercensal Decades,” Jour. 
Roy. Stat. Soec., vol. Ixii., 1899, p. 249. (Cf. Illustration i.) 
(3) PEARSON, KARL, ArLicE Lrg, and L. BRAMLEY MooRrE, ‘‘Genetic 
(reproductive) Selection: Inheritance of Fertility in Man and of 
Fecundity in Thoroughbred Racehorses,” Phil. Trans. Roy. Soc., Series 
A, vol. cxcii., 1899, p. 257. (Cf. lllustration ii.) 
(4) CAVE-BROWNE-CAVE, F. E., “On the Influence of the Time-factor on 
the Correlation between the Barometric Heights at Stations more than 
1000 miles apart,” Proc. Roy. Soc., vol. Ixxiv., 1904, pp. 403-413. 
(The difference-method of Illustration iv. used.) 
(5) Hooker, R. H., “On the Correlation of the Marviage-rate with Trade,” 
Jour. Roy. Stat, Soc., vol. lxiv., 1901, p. 485. (The method of 
Illustration v.) 
(6) Hooker, R. H., ¢ On the Correlation of Successive Observations : illus- 
trated by Corn-prices,” ¢bid., vol. lxviii., 1905, p. 696. (The method 
of Illustration iv.) 
(7) HooxkEr, R. H., “The Correlation of the Weather and the Crops,” 4bsd., 
vol. Ixx., 1907, p. 1. (Cf. Illustration iii.) 
(8) Norron, J. P., Statistical Studies in the New York Money Market; 
Macmillan Co., New York, 1902. (Applications to financial statistics : 
an instantaneous average;method, analogous to that of illustration v., is 
employed, but the instantaneous average is obtained by an interpolated 
logarithmic curve.) 
(9) MarcH, L., ‘‘Comparaison numérique de courbes statistiques,” Jour. 
de la soctété de statistique de Paris, 1905, pp. 255 and 306. (Uses the 
methods of Illustrations iv. and v., but obtaining the instantaneous 
average in the latter case by graphical interpolation.) 
(10) Youre, G. U., “On the Changes in the Marriage and Birth Rates in 
England and Wales during the past Half Century, with an Inquiry as 
to their probable Causes,” Jour. Roy. Stat. Soc., vol. Ixix., 1906, p. 88. 
(11) HEroN, D., On the Relation of Fertility in Man to Social Status, 
‘* Drapers’ Co. Research Memoirs: Studies in National Deterioration,” 
I. ; Dulau & Co., London, 1906. 
(12) Jacos, S. M., “On the Correlations of Areas of Matured Crops and the 
Rainfall,” Mem. Asiatic Soc. Bengal, vol. ii., 1910, p. 847. 
(18) ““ STupENT,” ¢‘ The Elimination of Spurious Correlation due to Position 
in Time or Space,” Biometrika, vol. x., 1914, pp. 179-180. (The 
extension of the difference-method by the use of successive differences.) 
(14) ANDERSON, O., ‘‘Nochmals iiber ¢ The Elimination of Spurious Correla- 
tion due to Position in Time or Space,”” Biometrika, vol. x., 1914, 
pp. 269-279. (Detailed theory of the same extended method.) 
(15) Cave, BEATRICE M., and KARL PEARSON, ‘‘ Numerical Illustrations of 
the Variate-difference Correlation Method,” Biometrika, vol. x., 1914, 
pp. 340-3855. 
(16) PoynTING, J. H., ‘“ A Comparison of the Fluctuations in the Price of 
Wheat, and in the Cotton and Silk Imports into Great Britain,” Jour. 
208