SUPPLEMENTS—ADDITIONAL REFERENCES. :
(51) RHODES, E. C., “On the Problem whether two given Samples can be
supposed to have been drawn from the same Population,” Ziometrika,
vol. xvi., 1924, p. 239, and Metron, vol. v., 1925, D3.
(62) PEARSON, KARL, “On the Difference and the Doublet Tests for Ascertain-
ing whether Two Samples have been drawn from the same Population,”
Biometrika, vol. xvi., 1924, p- 249.
The Law of Small Chances (p- 273).
(53) BorTKIEWICZ, L. VON, ‘‘Realismus und Formalismus in der mathe-
matischer Statistik,” Allgemein. Stat. Arch. vol. ix., 1916, p. 225.
(Continues the discussion initiated by the paper of Miss Whitaker,
cited on p. 273.)
(54) GrEENWOOD, M., and G. UpNY YULE, “On the Statistical Interpreta-
tion of some Bacteriological Methods employed in Water Analysis,”
Journal of Hygiene, vol. xvi, 1917, p. 36. (Applies a criterion
developed from Poisson’s limit to the discrimination of water analyses ;
numerous arithmetical examples.)
(55) “‘ STUDENT,” ‘‘ An Explanation of Deviations from Poisson’s Law in
Practice,” Biometrika, vol. x., 1919, p. 211.
(56) BorTKIEWICZ, L. voN, ‘Ueber die Zeitfolge Zufilliger Ereignisse,”
Bull. de U Institut Int. de Stat., tome XXx., 2¢ livr., 1915.
(57) MoraNT, G., “On Random Occurrences in Space and Time when
followed by a Closed Interval,” Biometrika, vol. Xiii., 1921, p. 309.
See also references 73.
Frequency Curves (p. 314).
(58) PrarsoN, Kary, ‘“Second Supplement to a Memoir on Skew Variation,”
Phil. Trans. Roy. Soc., Series A, vol. cexvi., 1916, p. 429. (Completes
the description of type frequency curves contained in references (1) and
(3) of p. 105,)
The advanced student who desires to compare the merits of different
frequency systems proposed, should consult the two following : —
(59) CHARLIER, C. V. L., Numerous papers issued from the Astronomical
Department of Lund, 1906-12, especially ““ Contributions to the
Mathematical Theory of Statistics ” (1912).
(60) EnceEwortn, F. Y., “On the Mathematical Representation of Statisti-
cal Data,” Jour. Roy. Stat. Soc., vol. Ixxix., 1916, p. 456 ; Ixxx. PP.
65, 266, 411 ; lxxxi., 1918, p. 322,
(61) SorEr, H. E., Frequency Arrays, Cambridge University Press, 1922,
(62) EpcEwortn, F. Y., “ Untried Methods of Representing Frequency,”
Jour. Roy. Stat. Soc., vol. Ixxxvii, 1924, p. 571.
(63) RomaNovsky, V., “Generalisation of some Types of the Frequency
Curves of Professor Pearson,” Biometrika, vol. xvi., 1924, p. 106.
(64) PEarsoN, KaRrL, Historical Note on the Origin of the Normal Curve
of Errors,” Biometrika, vol, xvi, 1924, p. 402.
(65) RHODES, E. C., “On the Generalised Law of Error,” Jour. Roy. Stat.
Soc., vol. Ixxxviii., 1925, p. 576.
(66) EnceEworrH, F. Y., “Mr Rhodes’s Curve and the Method of Adjustment,”
Jour. Roy. Stat. Soc., vol. Ixxxix., 1926, p. 129,
(These papers are concerned with the general theory of frequency
systems ; the undermentioned deal with the forms which are suitable
for the representation of particular classes of data, especially statistics
of epidemic disease.)
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