THEORY OF STATISTICS.
order and aggregate of classes, different values of p and n, 294,
10-11; ultimate classes, 12; 295; experimental illustrations
positive classes, 13-14; consist- of, 258, 259 (qu. 1 and qu. 2), 274,
ence of class-frequencies, 17-24 371 ; graphic method of forming
(see Consistence) ; association of, a representation of series, 295-
25-59, 377-381 (see Association) ; 297 ; mechanical method of form-
sampling of, 254-334 (see Sam- ing a representation of series, 297—
pling of attributes). 299; refs, 313; direct deter-
Averages, generally, 106-132 ; def., mination of mean and standard-
107 ; desirable properties of, 107— deviation, 299-300 ; deduction of
108; forms of, 108; average in normal curve from, 301-302;
sense of arithmetic mean, 109; refs., 314.
refs., 129-130. See Mean, Median, Bispham, J. W., refs., errors of
Mode. sampling in partial correlations,
Axes, principal, in correlation, 321— 395.
322. Blakeman, J., refs., tests for line-
arity of regression, 209, 354 ; prob-
able error of contingency co-
BACHELIER, L., refs., Calcul des efficient, 354.
probabilités, 396 ; Le jeu, la chance. Boole, G., refs., Laws of Thought, 23.
et le hasard, 396. Booth, Charles, on pauperism, 193,
Barlow, P., tables of squares, etc., 195.
67. Refs., 357. Borel, E., refs., Théorie des proba-
Barometer heights, table, 96; dia- bilités, 360.
gram, 97 ; means, medians, and Bortkewitsch, L. von, law of small
modes, 122. chances, 265-266, 370; time-
Bateman, H., refs., law of small distributions, 389; refs., law of
chances, 273. small chances, 273, 393.
Bateson, W., data cited from, 37, Bowley, A. L., refs., effect of errors
380-381. on an average, 356 ; on sampling,
Beaven, E. S., refs., yield trials, 396. 354 ; Measurement of Groups and
Beetles (Chrysomelide), sizes of Series, 354 ; Elements of Statistics,
genera, 363-364. 360, 396 ; Elementary Manual of
Beeton, Miss M., data cited from, 78. Statistics, 360 ; cost of living, 390 ;
Bennett, T. L., refs., cost of living, index numbers, 391; Prices and,
390. Wages, 1914-20, 391.
Bernoulli, J., vefs., Ars Conjectandi, — and L. R. Connor, statistical
360. grouping and formule, ref., 394.
Berry, R. A., refs., variation in Bravais, A., refs., correlation, 188,
mangels, 396; errors in feeding | 332.
experiments, 396. British Association, data cited from,
Bertillon, J., ref., Cours élémentaire stature, 88; weight, 95, see
de statistique, 6, 359. Stature ; Weight; Reports on
Bertrand, J. L. F., refs., Calcul des index-numbers ; refs., 130-131.
probabilités, 360. Address by A. L. Bowley on sam-
Betz, W., ref., Ueber Korrelation, pling, 354.
360. Brown, J. W., refs., index-correla-
Bias in sampling, 261-262, 279-281, tions, 266, 252.
336-337, 343, 353. Brown, W., refs., effect of experi-
— in scale-reading, 362-363. mental errors on the correlation-
Bielfeld, Baron, J. F. von, use of coefficient, 226 ; Zhe Hssentials of
word ‘ statistics,” 1. Mental Measurement, 360, 396.
Binomial series, 291-300; genesis ‘Brownlee, J., refs., frequency curves
of, in sampling of attributes, (epidemiology), 394.
291-293 ; . calculated series for Bruns, H., refs., Wahrscheinlich-
408
