INDEX. 4.09
keitsrechnung und Kollektivmass- | Coefficient, of association, 37-39 ; of
lehre, 360. contingency, 64-67 ; of variation,
Brunt, D., refs., The Combination of 149, standard error, 351 ; of cor-Observations,
 397. relation, see Correlation.
Collins, H. S., refs., agricultural ex-CAVE,
 BeEaTrICE M., correlation dif- periments, 396.
ference method, 198 ; refs., 208. Colours, naming a pair, example of
Cave-Browne-Cave, F. E., correlation contingency, 379-380.
difference method, 198; refs., 208. Connor, R. I. See Bowley.
Census (England and Wales), tabu-  Consistence, of class-frequencies for
lation of infirmities in, 14-15; attributes, generally, 17-24; def.,
data as to infirmities cited from, 18-19 ; conditions, for one or two
32-33 ; classification of occupa- attributes, 20; for three attritions,
 as example of a hetero- butes, 21-22; refs., 23.
geneous classification, 72; classi- — of correlation-coefficients, 250-fication
 of ages, 80, and refs., 105; 251.
data as to ages of husbands and Contingency tables, def., 60 ; treatwives
 cited from, 159. ment of, by elementary methods,
Chance, in sense of complex causa- 61-63 ; isotropy, 68-71, 328-331,
tion, 30 ; of success or failure of testing of divergence from inan
 event, 256. dependence, 378-380.
Chances, law of small, 265-266, — coefficient of, 64-67; applica-363-367
 ; refs., 273, 393. tion to correlation tables, 167, (qu.
Charlier, C. V. L., refs., theory of 3) 189; standard error of (refs.),
frequency curves, resolution of a 355, 395; partial or multiple concompound
 normal curve, 314, 315, tingency (refs.), 390.
393. Contrary classes and frequencies (for
Childbirth, deaths in, application of attributes), 10; case of equality
theory of sampling, 282-284. of contrary frequencies (qu. 6, 7,
Cholera and inoculation, illustra- 8),16; (qu. 8), 24; (qu. 7, 8,9), 59.
tions, 31-32, 34-35, 383-384. Correction of death-rates, ete., for
Chrysomelid ee, distribution of size of age and sex-distribution, 223-225 ;
genus, 363-364. refs., 226, 392.
Church, A. E. R., refs., probable — of standard-deviation for grouperrors,
 395. ing of observations, 211-212 ; refs.
Class, in theory of attributes, 8; (including correction of moments
class symbol, 9; class-frequency, generally), 225.
10 ; positive and negative classes, Correction of correlation-coefficient
10 ; ultimate classes, 12 ; order of for errors of observation, 213-214 ;
a class, 10. refs., 225-226, 391-392.
Classification, generally, 8; by di- Correlation, generally, 157-253 ; conchotomy,
 def., 9; manifold, 60- struction of tables, 164 ; represen-74,
 76 ; homogeneous and hetero- tation of frequency-distribution
geneous, 71-72; of a variable for by surface, 165-167 ; treatment of
frequency-distribution or corre- table by coefficient of contingency,
lation table, 76, 80-81, 157, 164. 167 ; correlation-coefficient, 170—
Class-interval, def., 76 ; choice of 174, def. 174, direct deduction,
magnitude and position, 79-80, 231-233; regressions, 175-177,
362-363 ; desirability of equality direct deduction, 365-366, def.
of intervals, 76, 82-83 ; influence 175; standard-deviations of
of magnitude on mean, 113-114, arrays, 177, 204, 205; calculation
115, 116 ; on standard deviation, of coefficient for ungrouped data,
140, 212. 177-181, for a grouped table, 181-Cloudiness
 at Breslau, frequency- 188 ; between movements of two
distribution, 103 ; diagram, 104. variables, difference method, 197—

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