SUPPLEMENTS—ADDITIONAL REFERENCES. 
Probable Errors, etc. : General References (p- 355). 
(82) IsserLts, L., “On the Value of a Mean as calculated from a Sample,” 
Jour. Roy. Stat. Soc., vol. Ixxxi., 1918, p. 75. 
(83) Sorrr, H. E., and Others, ““On the Distribution of the Correlation 
Coeffivient in Small Samples,” Biometrika, vol. xi., 1916-17, p. 328, 
(84) PrarsoN, Karr, *“On the Probable Error of Biserial »,” Biometrika, 
vol. xi., 1916-17, p. 292. 
(85) Young, AxprEW, and KARL PEARSON, *“On the Probable Error of a 
Coefficient of Contingency without Approximation,” Biometrika, vol. 
xi., 1916-17, p. 215. 
(86) Editorial, “On the Probable Errors of Frequency Constants,” Pt. IIL, 
Biometrika, vol. xiii., 1920, p 1183. 
(87) ““SrupENT,” *“ An Experimental Determination of the Probable Error of 
Dr Spearman’s Correlation Coefficients,” Biometrika, vol. xiii., 1921, 
. 263. 
(88) Bhan, J. W., © An Experimental Determination of the Distribution 
of the Partial Correlation Coefficient in Samples of Thirty,” Proc. Roy. 
Soe., A, vol. xevii., 1920, and Metron, vol. ii., 1923, p. 684. 
(89) Tscauprow, A. A., *“ On the Mathematical Expectation of the 
Moments of Frequency Distributions,” Biometrika, vol. xii., 1918-19, 
pp. 140 and 185, and vol. xiii., 1921, p. 283; and Metron, vol, ii., 
1923, pp. 461 and 646. 
(90) F1sHER, R. A., “On the Probable Error of a Coefficient of Correlation 
deduced from a Small Sample,” Metron, vol. i., No. 4, 1921, P3- 
(91) FisHkr, R. A., “On the Mathematical Foundations of Theoretical 
Statistics,” Phil. Trans., A, vol, cexxii., 1922, p. 309, 
(92) Pearson, E. S., “The Probable Error of a Class-index Correlation,” 
Biometrika, vol. xiv., 1923, p- 261. 
(93) Fismer, R. A., “The Distribution of the Partial Correlation Co- 
efficient,” Metron, vol. iii., 1924, p. 329. 
(94) PEARsoN, E. S., “ Note on the Approximations to the Probable Error of 
a Coefficient of Correlation,” Biometrika, vol. xvi., 1924, p. 196. 
(95) CHurcH, A. E. R.,, “On the Moments of the Distribution of Squared 
Standard Deviations for Samples of N drawn from an indefinitely 
large Population,” Biometrika, vol. xvii, 1925, p. 79. 
(96) PearsoN, KARL, ‘Further Contributions to the Theory of Small 
Samples,” Biometrika, vol. xvii., 1925, P1760. 
(97) SpLawa-NEYMAN, J., ‘Contributions to the Theory of Small Samples 
drawn from a Finite Population,” Biometrika, vol. xvii., 1925, p. 472. 
(98) FisHER, R. A., ‘“ Applications of ‘Student’s’ Distribution (and follow- 
ing Tables by ‘* Student ), Metron, vol. v., No. 3, p. 90, 1925. 
(99) Tscaurrow, A. A., “On the Asymptotic Frequency Distributions of 
the Arithmetic Means of m Correlated Observations for very great 
Values of n,” Jour. Roy. Stat. Soc., vol. 1xxxviii., 1925, p. 91. 
(100) Rropnks, E. C., “The Comparison of two Sets of Observations,” 
Jour. Roy. Stat. Soc., vol. 1xxxix., 1926, p. 544. 
(101) CuurcH, A. E. R., “On the Means and Squared Standard Deviations 
of Small Samples from any Population,” Biometrika, vol. xviii., 1926, 
p- 321. 
On the problem of fluctuations of sampling in correlations between 
time-series, see also Yule (43). 
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